sensible carryon/daypack?

[pinknic38]

So I am having issues finding a good carryon bag/something I can tote with me during the day, that isn't my pack.

I am not trying to bring a purse (I have a wristlet that I keep all my ids and debit cards and tickets and money and whatever else small in), but I am just trying to find something sensible that I can throw my wristlet, ipod, a journal, a camera, maybe a nalgene bottle and some small snacks, and some sunglasses in, you know, the general stuff. I don't want something that's going to be a hassle to carry in addition to my backpack. so I'm not really sure what route to go.

any suggestions? at this point I don't care what it looks like (but I object to a fanny pack... I spent too many vacations as a young child in the 80s with a mother who had a day glo mickey mouse fanny pack and may have scarred me for life), but I want something where I am not going to easily get it stolen and can easily be toted around with my pack when I'm in airports, or trying to get to my hostel.