It's SUPER fun to mess with, when I displayed it at a convention I kept standing in front of my booth to bat it around.
HOWEVER: I will note that the adhesive is indeed VERY strong as advertised. If you're going to sell them I would make sure it's clear to buyers that once they stick it somewhere they are NOT getting that thing off. Thankfully I stuck a tester one in a place I don't entirely mind it but I do wish I had placed it somewhere with a bit more thought. Ah well.