Since I'm on campus, I guess I'd bring my pocket knife, my glasses, my key chain, and my backpack, which is actually a bicyclist or hiker's day pack, and designed to carry relatively heavy loads. I guess the keychain needs some explanation too. The main thing is that it has an old P38 style can opener attached to it, and it at one point had nail clippers and a laser pointer attached as well. If it wasn't cheating, I'd probably reattach both of those, but if not, the can opener will come in handy on its own.
If I were in my bedroom at home, the list would be more like pocket knife, machete, backpack, and the two man tent that I have in my closet for some reason. I may even have a full on hiking backpack in there, although I think it finally fell apart at some point and got thrown out.