You haven't seen advertising for them, but you've probably seen them—Silly Bandz, the mostly animal-shaped rubber bands that have become the latest must-have for elementary-school kids and the latest headache for teachers who've been banning them en masse from classrooms across the nation. In a smart move, arts and crafts chain A.C. Moore has jumped headlong into the trend by planning to hold the world's largest Silly Bandz trading event at all 135 of its stores on Thursday. Kids get two free bands to take home and will "learn about Silly Bandz storage options" (in other words, get their parents to buy some storage cases and the craft stuff required to personalize them). Thanks to A.C. Moore, kids who've been banned from trading these things at school will have a new place to trade them—and of course, buy more bands. I see what you did there, A.C. Moore. Smart.