YEAH!” A sales clerk at a local pharmacy quietly says, “Love your bracelet!” before reaching into her pocket and bringing out her rainbow key chain. Her boss is a bigot, she says, so she’s not out at ...

(Editor’s note: Kyle Stock owns a Rainbow Loom key chain.) The chain of craft shops is crammed with a wide array of knickknacks, from puffy paints to picture frames. But the Rainbow Loom alone ...