Inspired by this comic, here is a classy set of eight full-color stickers you can use to adorn any device in your life -- or even to turn a cardboard box into a time machine.
Strong but repositionable/removable adhesive means you can slap them on school property and take 'em off if the principal gets mad. He'll never understand kids!
Or, do as I did, and put them on your rocketship. NASA will never know! THEY DON'T CHECK.