We had pogs... till someone hit my principal with a slammer.
we had slap bracelets... till my principal decided we might accidentally slit our wrists with them.
We just started selling Twilight slap bracelets at Borders and one of my managers and I about had a heart attack (even though we're not really Twilighters at all)
They also just started reprinting the Babysitters Club books and my manager started cussing in a good way when I showed them to her. Customers were staring at us. It was pretty funny.
If you haven't seen silly bands yet... just wait. I'd recommend running into a fivebelow and getting yourself like five packs for bribes over the summer (there are 12 in each pack) we used to give them to my kids as treats... otherwise known as bribes. Behave and I'll give you that silly band shaped like a duck you've been missing. Three of my girls had them on both arms up to their elbows every day. and they're basically just rubber bands that retain their shape lol.