I also work at a big regional theatre, so they provide most of the first aid and office supplies. What I stock in my kit, and at lot of this was determined last year when I worked for the connected grad school, are fix-it things: velcro pieces, more-tite, hot glue, goo gone, eye hooks, 1 5/8 screws. As well as things to make common things I encountered: a syringe, red & blue food coloring, and baggies to make blood packs, glow in the dark paint, exactos, tie line, aluminum wire, and suction cups. The contents of my kit is kind of strange.