I hope that there's a special place in hell reserved for the evil bastard who invented THESE:
They're called Bakugans, and my classroom is INFESTED with them.
They start out in the closed position, so they look like a small, harmless ball. As soon as you attach them to a magnetic object, however (like, oh, I don't know, a DESK OR DESK CHAIR), they shoot open (see above). If you're old school, they're kind of like magnetic Transformers.
I thought they were pretty cool at first--for about 5 seconds. Now, they're just a giant pain in my teaching ass. The above picture show just ONE DAY'S worth of intercepted Bakugans. And I plan to keep them in my Toy Drawer (not THAT one, you freaks) until the last day of school. If I'm lucky, the owners will forget I have them and I can sell them on eBay.
And while we're on the subject, the Second Most Annoying Thing to a Fifth Grade Teacher are THESE:
They're called Tech Decks and apparently, they are infinitely more interesting than Lowest Common Denominators (that's LCDs to you).
4 more days, 4 more days....
(FYI: I've tried for 20 minutes now to fix the spacing on this post and it's still screwed up...I give up.)