Stop planning the food count like it is some math problem you can solve. You had 40 sandwiches and 75 people showed up, but that is not a sign you messed up, it is a sign you guessed blind in the first place. Most of those 75 probably came because it was free and word travels fast at a park, not because they were starving. If you start stocking for 150 next time, you will be tossing half of it in the trash and Ray will be the only one eating your leftovers. Set a hard cap, hand out tickets at the start, or just run out and let it be fine, because turning people away is not the worst thing that can happen to a free meal.

Lockers are the right call for Moab rock, no question. Just check those fittings after every run, mine started weeping at the bulkhead after two seasons.

Oh man, I do this all the time! My best one is a bamboo skewer I snapped the point off of and rubbed down on the sidewalk until it was flat and smooth. It lives in my pencil cup now and I reach for it more than my real folder for anything under 2 inches. I also bent a paper clip into a tiny awl for poking holes in sewing signatures, and a flathead nail with the tip filed down works great as a little weight for holding pages open. Something about the size match makes all the difference, since a big tool on a tiny fold just never sits right. Cheap junk tools beat fancy ones when the scale is this small.