What is a good gun, bow and arrow, or crossbow i can make without glue or tools (excluding knife as a tool)?

Says it in the title. Give me links or your own instructable if you have a suggestion.

Ummmmmm everything needs tools but u cud make a bow out of a branch a nice springy 1 but not so much it will break, then cut two little notches on each end of the stick and if you have string or something springy stretch it out so it wud just barely fit tight then bend the bow and put one end of the string throught the notch and tie it, then repeat with the other end, so the string is tight. Then make arrows out of sticks and rocks.