Things You'll Need
Instructions
Place the skinny end of the balloon over one end of the plastic straw. Work the balloon down onto the plastic straw until the end of the straw meets the part of the balloon that inflates.
Place the packing tape against the plastic straw where the end of the balloon is. Wrap the packing tape around the plastic straw and end of the balloon to secure the two of them to each other.
Roll a small ball from the modeling clay. Drop the small ball into the open end of the plastic straw.
Hold the plastic straw in your left hand. Grab the small ball from the inside of the balloon with your other hand (reverse this for lefties).
Aim the open end of the plastic straw at a tree in your backyard. Pull back on the small ball to stretch out the balloon. Release the small ball to fire it from the airsoft mini gun you have made.