Dragon's hide seems to be the gold standard when it comes to protective gear at Hogwarts, and basically for the wizarding world as a whole. Harry's school supplies requirements lists the following (among a lot of other items that I will leave out for the sake of brevity):
First-year students will require:
1. Three sets of plain work robes (black)
2. One plain pointed hat (black) for day wear
3. One pair of protective gloves (dragon hide or similar)
4. One winter cloak (black, silver fastenings)
Please note that all pupils’ clothes should carry name tags.
There they are, listed on Harry's letter: Dragon hide gloves or similar. Yet, are there similar protective gear? Are there magical creatures whose hides are stronger than dragon's hide? Or are there hides that are perhaps not as good as dragon's hide, but will protect a student in a pinch? Are any examples of students using lesser or stronger protective gear than dragon's hide represented in canon? Any examples you can cite would be great, both of magical creatures with particularly tough hides and of non-dragon hide protective gear (and how well it worked).
If this question is too scattered, please leave a comment and I'll try and tighten it up. I'm hoping it makes sense, though.