Scavenger Hunt

I intercepted a memo with an odd-looking shopping list attached. I'm not sure I can get hold of all of them, but maybe if I fake a few of them I can scape together enough to infiltrate the Secret Society.

This is an optional puzzle: you can use it in exchange for any one puzzle.  Bring at least 2n+3m of the following items to Leonard Lounge, where n is the number of campers on your team, and m is the number of staff on your team. If we accept 2n+3m of them, we'll tell you the answer to the puzzle of your choice.  Once solved, the puzzle may be redeemed at any time.