clamps for dry fit tonight, how many is enough

quick gear question before class tonight, how many clamps did people end up buying for the dry fit step? i've got like 2 decent ones from a garage project years ago and i'm guessing that's not gonna cut it for a shelf with multiple joints. did the instructor say a number last week or am i just misremembering. don't wanna show up under equipped again 🫠 🙈