Ok, we need one more system with a can to smack an idiot!
Tech Level: 2 Complexity Modifier: 2
Range: 10’ radius, special
Damage: 6d10 main, 6d6 others
Special: wielder immune
Smack cans are highly compressed depleted uranium cans. A wielder makes a melee attack on someone instead of throwing the can. If it hits, the main target takes damage as above, but then the can explodes and hits all creatures in the area with acid-based damage except the person who swung the can.