| 
 Good
Candy WrappersPlastic BagsPopped BalloonsRubber BandsFoilMylar Balloons | 
 Meh
These things are okay, but they don't smash down very well.Packing PeanutsStyrofoamOld ToothbrushBubble WrapPlastic Spoon | 
 Bad
If it's biodegradable or dangerous, it's probably not appropriate.PaperApple CoreCandyDead BatteryBreadBroken Glass |