It looks like it's straight off the industrial saw at a meat processing plant. But this bloody toothed sawblade is actually a harmless children's toy. Instead of deadly steel, it's made from less-deadly foam that flies like a frisbee when tossed.
If someone doesn't see it coming there is -- thankfully -- no risk of it lopping off a limb or cleaving their skull. And at just $US5, it's positioned perfectly in the "this will probably be destroyed in 15 minutes" price range. [ThinkGeek]