Paul - thanks for donating me three tool pouches to give away as trail awards at Cruise Moab 2014. For some years now I have run a "collect the most - or most interesting - trash contest" on each trail I lead. The contest adds an element of fun and has people connect with the trail and their surroundings in an additional way.
I'm pleased to say that the trails are remarkably clean and people are working hard to find any trash.
As an aside, I have fully integrated my tool roll into to how I work - whether in the garage or on the trail.