What are some kidfriendly weapons I can make?

Ok get a shoe hanger. It's a hanger that you get when you buy flip-flops from payless. Put a rubber band on it. Then you can use it as a bow-slingshot thingy which you can use to shoot pencils and paper . Some kinds of rubber bands are better than others. Make sure you get a good, stretchy rubber band, not the crappy snappy kind.