Cork trick is nearly impossible for them to copy! This week we've got a combination puzzle and magic trick, and the best part is that even AFTER you show them how it's done, they won't be able to pull it off! Place 2 wine corks in the crook of each of your thumbs, pinched against your index fingers. The challenge is to get each of the corks pinched between the thumb and forefinger of the OTHER hand, and pull your hands apart simultaneously.