I am a student at Michigan State and the defensive players get small "s" stickers. It's only the defensive players though.
I'm pretty sure Ohio State does. I think Michigan used to in the 80's.
Florida State has tomahawk stickers. NC State wolfpack has paw print stickers.
Oklahoma State - a cowboy Ohio State - a buckeye leaf Lousiville - a cardinal head Pitt - a tooth Florida State - a thomahawk Missouri - tiger paw Arizona - wildcat paw Hawaii - diamond North Carolina -tarheel logo
There are many more that I can't remember.
Oklahoma State and Arizona no longer do it and I don't think Missouri does it anymore either. Gerioga does a dog bone. Clemson does a paw. I believe BYU and Vandy have just started using pride stickers. Prude and E. Carolina also do it.