Great Silent Pellet Trap & Fun Targets Idea

I use a large cardboard box stuffed tightly with plastic stretch wrap from my work. No cost !!!

Try thumb-tacking the paper targets directly onto CORRUGATED cardboard. That setup breaks the impact noise into multiple directions and dampens impact. Any cardboard box can be cut into usable backstops, and are usually free from most stores. It's hard to beat that price !!