Homemade BB/Air Soft/Paintball/Anything Gun

What you need is any of the guns ammo from the name of this 'able. And if your going to shoot anything, well, get anything.
You need a water bottle, ballon, and scissors (possibly hot glue).

Now for the balloon you need to cut away the section indicated and throw away the neck.

Take the water bottle and "amputate" the section indicated in the yellow square. Only keep the part of the bottle that you would drink from

Attach the ballon body to the bottle neck, hot glue it, and drop in your ammo, pull back, and LET GO!
Happy hunting