This sounds very much as though it could be The Zero Stone by Andre Norton (which also has a sequel - "Uncharted Stars"), first published in 1968.
The young man's name is Murdoc Jern and he has an alien companion, kind of like a cat, called Eet.
One of the most familiar covers (at least to me) is:
There's a reasonably complete write-up by Judith Tarr on the ...
This is Bad Blood by Peter Kennedy (1996). It is the fifth book in the "Fun Fax Horror" series. It is young adult, according to Goodreads.
Summary (emphasis mine):
Mike Campbell can't believe his luck: he's got two free Zombies tickets and the most popular girl in his class has agreed to go to the concert with him! What Mike doesn't realise is that he's ...
It's probably The Dark is Rising by Susan Cooper. It's the second book in the series.
The main character of the second novel, and a major character in the entire series, [Will Stanton] is the seventh son of a seventh son, in a large, close human family. His eleventh birthday marks the beginning of his magical awakening and rise to power as the last of ...
Bob Fulton's Amazing Soda-Pop Stretcher: An International Spy Story (1963) by Jerome Beatty Jr.
Child prodigy Bob Fulton invents a machine that will turn one bottle of soda pop into several. Something goes wrong and the machine explodes. That's when he discovers it turned the soda into the perfect frictionless lubricant. His sister and her friends use it to ...
The book I was remembering was titled The Game by Terry Schott! It's a pretty good book that covers the story of Zack the main character as he plays a virtual reality game in which people can earn credits (money) for when they are back in the real world. I'll post the official summary of the story below!
What if life as we know it was just a game? What if ...
Ready Player One (2011) by Ernest Cline
In the year 2045, reality is an ugly place. The only time teenage Wade Watts really feels alive is when he's jacked into the virtual utopia known as the OASIS. Wade's devoted his life to studying the puzzles hidden within this world's digital confines, puzzles that are based on their creator's obsession with the pop ...
This might be part of the Replica series by Marilyn Kaye. The one that sounds the most similar is Another Amy.
Perfect Amy Candler tries hard to blend in with everyone else, but then she comes face to face with someone who looks just like her--someone who is another Amy. The two girls look identical, and Amy expects them to have identical personalities. ...
I believe this might be Wildside, by Steven Gould.
The characters are teens, and the main character, Charlie (which fits with your recollections) has discovered a portal to a parallel world in his Uncle's barn. Because the world is one in which humanity hasn't evolved, there are extinct species alive and so might qualify as "Jurassic Like" (although no ...
The Runaway Robot (1965), by Lester del Rey
The cover on the left is an accurate portrayal of Rex the robot, the point-of-view character, according to Rex's description of himself:
I have no nose or mouth, and only one eye, you might say -- the refractor bulb in the middle of my control box
Early on, Rex muses about his sense of vision:
[Paul] says ...
This is almost certainly the Outernet series. I also read it in the early/mid 2000s. Here's an excerpt from Wikipedia's description of the first book (emphasis mine); I include also mentions of some other key characters and story elements (Loaf, Merle, Bitz, Googie, Help) in case they ring bells for you:
On Jack Armstrong's birthday, he received a laptop ...
Found it with your help, Valorum, thank you!
It was Strange Attractors by William Sleator.
Apparently the device was a modified calculator, and it was used for time travel (which leads to a split timeline and antagonist versions of two of the main characters).
Possibly First Contact (1994) by Nigel Robinson.
From Amazon :
The year is 3243. A mysterious alien craft, which has been travelling for 2000 years, moves slowly through deep space, searching for only one planet - for contact.
This review talks about three "Point SF" books, including First Contact, for which it mentions the robot:
In First Contact, ...
I found the book! I can't believe it. It's called My Aunt, the Monster by Mary Stanton. The front cover has a picture of the girl on a corded phone with her little brother next to her, and a griffin in the foreground. So at least the details I gave weren't too far off the mark. So relieved I can lay this to rest!
The first story, as suggested in a comment by Mr Lister, is probably "Pawley's Peepholes" (aka "Operation Peep"), a short story by John Wyndham published in Science-Fantasy, Winter 1951, which is available at the Internet Archive. Set in the present (i.e. the middle of the 20th century, when it was written), it is about annoying time-tourists from the future....
Angel Blood by John Singleton
The nurses call this place the Bin. We have to get out. We have to run
away before they hurt us for good. But there's no escaping Dr Dearly
and his brutality - is there? Four extraordinary children face a
terrifying ordeal. Their only hope is local hard-case Nail, but has he
got what it takes to save them? Brutal, ...
The Mouth by Carmel Bird
You can see the fish on the front cover.
Jade knows that her best friend, Fern, has died. Yet she can hear Fern
tapping on the window every night - what is Fern's ghost trying to
It's part of the After Dark series.
Ark of Venus by Clyde B. Clason
They hang chains off the bottom of the vessel which prevent the electromagnetic storms from damaging the vessel as it descends.
I am almost positive this is The Time Shifter by John Peel.
A beautiful dream of a better future? Or Brandon's worst nightmare...?
Twelve-year-old Brandon Mooney gets the scare of his life when he
looks into a mirror...and sees a grizzled old man staring back at him!
But things get really weird when the old man steps out of the mirror
Possibly the 1988 novel Fade?
It's about invisibility and the title seems on par with your memory.
The linked wikipedia article mentions incest and labels it as YA fiction.
The page count is off though, it's over 300.
This teenreads review mentions the uncle
...finds that he has inherited the ability from his Uncle Adelard...
This Kirkus Review ...
I believe this is likely Wolf Brother by Michelle Paver, first book of the Chronicles of Ancient Darkness series (which has six books in it, not eight).
In pre-agricultural Europe, the hunter-gatherers of the Forest live in clans, each represented by a particular animal or life form. Torak and his father, of "Wolf Clan", live together in the forest. ...
This is Beyonders: A World Without Heroes by Brandon Mull.
After arriving at the blind king's decrepit keep, Jason learns that
the "blind king" is really Galloran, a broken hero who already tried
and failed on the same quest that Jason is now committed to. A few
moments after learning of Galloran's true identity, Jason is
introduced to Rachel, a ...
I think you are looking for The Seventh Robe by Ged Maybury
I think I read the same book in around 1995, and found this page while looking for it, the added information that it was likely an NZ author led me to the Amazon page
I recall this book having the AI robe that was black, and I think they are given to the children in some kind of egg that opens.
The book is called Basilisk (2004) by N.M. Browne.
This evocative story of greed, power, and deception sweeps from the underground cave network of the Combers, living like spiders among the endless tunnels and ropes, to the beautiful city inhabited by Abovers. When a young man named Rej discovers the body of a murdered Abover in the combes, their worlds ...
Samantha Slade series by Susan Smith
The blurb of the first book on Goodreads, Samantha Slade: Monster-Sitter is:
Are those real fangs in Little Lupi's mouth?
Samantha Slade isn't asking! For $6 an hour, she'd babysit for
monsters! So what if Lupi's a little hairy and likes to growl at the
full moon or if Drake consumes ketchup by the case and ...
I found it. At long last, I found it. I have to say, it was tricky. I tried over and over again every variation of the details I knew (or thought I knew) in google and every book search website I could find. Then, under advice from a New York Public Library article, I did a very specific search in Reddit. Empset themselves had been looking for the book I was ...
I did a little light google searching and ran across A Race Against Time: A Novel. It is part of a series with cover art resembling a part of a tree.
The Amazon description reads:
In this first book in the Virtual Reality series, a brilliant scientist experimenting with recombinant DNA develops a deadly virus and accidentally infects himself and several ...
The Game of Sunken Places by M. T. Anderson, 2004.
Cover copy from Goodreads:
When Brian and Gregory receive an invitation to stay at a distant relative's strange manse . . . well, they should know better than to go, since this is a middle-grade adventure novel. But they go anyway. Why not? Once there, they stumble upon The Game of Sunken Places, a board ...
Darkness Creeping: Twenty Twisted Tales by Neal Shusterman
In the short story Soul Survivor boy dies because plane crashes into the second floor of the house where he lives with his parents. But his soul is left to wander as a spirit and he learns to move within the minds of human beings. At first the baseball player (Sam “Slam” McKellen) is welcoming:
I believe the story with the boy and the pet bird is Ray Bradbury's "Fever Dream." The link on Wikipedia has a version of the story that ends without him touching the bird, but I found other references that do:
In the parlor, before the others entered, he quickly opened the bird cage, thrust his hand in, and petted the yellow canary, once. Then he shut ...
The Guardians of Time trilogy by Marianne Curley.
Isabel and Ethan are childhood friends. Their mentor is Arkarion who is 600 years old. And they are tasked to fight the Order of Chaos led by Lathenia, another immortal.
It contains the following books: