Pinterest to the rescue! While perusing recently, I came across the most brilliant idea to solve this sticky problem. Instead of using stickers, use binders clips with the students number on them. To make them a bit more personal, I would probably add the student's names to the sticker and maybe some sort of little graphic. Then at the end of the year, I would probably give them to the students, and voila, next year make new ones with new students. A relatively cheap solution to a major pain!
As far as where this photo came from, it was pinned by user. If it is your orignial idea, thank you and please let me know!