I just took a walk outside. In less than a 40' x 60' space, i counted over 3000+ things i could use as a weapon (improvised, direct or otherwise)

we better ban plants with flexible stalks and fibers, we would'nt want someone to strangle someone with it.

better ban socks too. I could fill one with pebbles or small rocks and cosh ya with it.

better ban trees and shrubs. I can make a thumping stick with a tree limb, or a spiky flail with certain shrubs.

better ban sand. I could throw it in your eye!