I think someone made some up years ago when the mod makers all jumped on making stickers to go on standups (most of which fall off or get damaged if you actually play your games.) - I know someone made some drop stickers themselves which were just the rollerskate itself.
Time to get creative maybe. Print on thin sticker stock and cover with mylar, all with a hole punched in the center so the rivet can stick through.
I looked through the photo gallery in this thread thinking I saw it there but it must have been somewhere else.