Ah, someone else who has a ditch kit for every day, and an empty or emptiable rucksack for those times when things are likely to go screwy.

I like what I see, but I would suggest trying any aftermarket handle for that cup BEFORE you leave the dorm/home. You might be suprised how unreliable coat hangers are after a while. I would also say look for a can that fits over it, and using a side-cutting can opener, make yourself a pot lid for your cup.

Also, no socks?