I've already completed the game, but I'm a bit confused about some of the items from my inventory that I never seemed to need. I had the paper tube, was that used to represent the sword in the fort levels? There was also a plunger, which I can't remember using; and a piece of cheese, which I don't think I could've used until I reached the very end - leaving it next to a mouse hole. Were these just little collectibles for the sake of collecting for fun, or did they each have a purpose?...