Your SM kit is your Batman utility belt. It has everything you need in a pinch, but doesn’t weigh several dozen pounds. There are a few categories that should be covered in your Kit.
Let’s start with the container. Whatever you are comfortable carrying: backpack, canvas tote, tool box, those wheelie suitcase things, whatever works for you. It needs to be large enough to fit everything, but not give you back problems. This is the bag I use.
Inside: What you pack will depends on the theatre you’re working at. And don’t feel like you have to be fully stocked from the get-go. Remember, you’re volunteering, so add you’re supplies slowly, when you can.
Scotch tape, mini stapler, staples, mechanical pencils, erasers, mini post-its, scissors, glue sticks, rubber cement, ruler, 3-hole punch (they make a ruler 3-hole punch combo that you can put in your binder)
Pain reliever: aspirin, ibuprofen, etc. (A variety is good in case there are allergies)
Band-aids: Plastic, cloth, non-latex. (Ditto)
Anti-bacterial ointment, cough drops
A mini pre-made kit will work. Make sure there’re a lot of safety pins. Also, you should know how to use a needle and thread for reattaching buttons and fixing hems in the dark.
Clear nail polish: it stop runs in nylons.
Prompt book. Laptop. Tea, instant coffee.
This is just a basic list. Your kit will evolve over time as you add and pare things away.
The Awesome Stage Manager