These are two types of shotgun shells that I have made (both are filled with 6mm .2g airsoft bbs) the one on the left is a dime roll, and on the right is a highlighter body. It leaves good sized dents in walls, and the shell usually sticks in (the plastic shell, the paper shell is destroyed)
Here is just a simple battery with tape, I call it BFBM (Blunt Force Battery Missile) It can break boards, and demolish cans
This is a simple dart made from a screw, and the top part of a highlighter. It goes all the way into logs (too short to come out the other end)
This is the most powerful of all of them, and my personal favorite, It is about a foot long (It goes out the edge of the frame) and is made of a cone made of aluminum (Which I made from a diet coke) and a sharpened coat hanger wire. This goes clear through walls and logs
