Re usable, cheap paintball grenades and are easy to make
Step 1: Materials
1.Sergical tubing (I got mine from a friend who was in physio tharapy and my brother got some also from a physio tharapist but im sure theirs other places to get it)
2. Coat hanger (straightened out)
3. Air soft BBs (the 6mm ones, it shouldn't matter what weight)
5.Water gun pump(out of the gun). Iv also used nerf gun peices but their harder to use.