Ice
Marbles
Ball bearings (My favorite- They break stuff very well)
Tums
WickedLaser Core
WickedLaser Anything
Mice
Stink bugs
Dry Ice
Molten Iron
Glass
Diamond Rings
Birth Control Pills
Micro SDs
Your Friend's sim card
Your Friend's Car Keys
Your Friend's iPod shuffle
Your Friend's Glass Eye
Pennies, Nickels, and Dimes
Hummingbird Eggs
Needles
Blood
Poop
Teeth
Fish
A blob of Epoxy
Stale Bread
Depleted Uranium
Used Condoms
Porcelain
A leaf
Babies