Small children sometimes stop to talk to the crew and watch them work, especially if the hopper blade is making a lot of grinding and crunching noises while it pulverizes something big, like astove or a couch.
Unfortunately the 2007 iF Award-winning stoveis only a concept for now -- meaning you won't see it on sale at Target anytime soon -- so if you want a real bonfire whose flames kiss the forest's leafy canopy, a crew of indentured campers is still your best bet.