This answer is based on all official information released by Tolkien about the Lord of the Rings timeline as it relates to the 21st century with gaps filled in by speculation:
By this time in history, electronics were in virtually everything from clothing to garbage cans to make them move, talk and/or make electronic noises.
Flying cars, once they were invented and perfected, had become so common that drivers no longer needed roads except perhaps for short journeys. Skyways dominated the skies of central California (The Shire) and eventually the entire world. Cultural influences from other countries, were more often seen in food and clothing.
Life was lived at a quicker pace than before, in evidence by the speed that people walked down the street, the time it took to cook dinner, and the swiftness of court trials.
Many sequels to the movie Jaws were produced, with the latest movie "Jaws 19" being filmed in holographic 3D.
Another notable book, Grays Sports Almanac, was published which covered many sports from 1950 to 2000, including football, baseball, hockey, horse racing, boxing, slamball, golf, tennis, track, polo, bowling, surfing, sailing, auto racing, rugby, soccer, ping pong, darts, swimming, diving, ice skating, racquetball, rodeo, and more. Gray's had been making almanacs since 1923.
At this point in history Hobbits, Elves, Dwarves, Orks, Ents, and other creatures were nowhere to be seen as they'd moved to Canada following the destruction of the One Ring.