I'm sitting here in my office watching the professional tree trimmers feeding branches into an industrial-strength brush chipper. Looks like fun. The chipper has a spout that shoots wood ships into their big panel truck. The first thing I thought of when I saw that high-velocity stream of wood chips is ... paintballs. Imagine taking off the chipper and just using the powered spout to shoot paintballs. I bet you could get a thousand paintballs per minute out of one of those bad boys.
I got to get me one of those.