the best paint gernades i have seen are the fat boys or fat bombs crap i cant remember the name. but they use more of a 1/2 inch rubber tubing maybe even 5/8 inch it creates more of a round bomb than the the long folded in half squad buster types. the thing that makes them so great is they are closed by folding over and wrapping the left over empty tubing around itself then to hold it it is held with just a rubber band. now these are shrink wrapped until ready to use. i have made some at home long time ago but never solved the shrink wrap problem. also made a filler out of pvc and a shop air compressor that worked.
what you want me to say something funny??
well do i look like a freak'n comedian to you.