Ooo, you know all those old supplies you never touch or look at anymore? like deco scissors, buttons, fibers, punches, etc. You may want to note where they are hiding Just In Case someone challenges you to use a funky old supply.
have some sort of alterable item ready, we almost always have some sort of altering challenge! It doesn't need to be something elaborate, a tissue box, empty canister, frame, block of wood, spatula, whatever you've got on hand will work.
and did we mention stocking up on adhesive??