I really liked this thread on snacking, it has a lot of good ideas:

http://forums.teamestrogen.com/showt...ghlight=snacks

Depending on how long I'm going to be out, I take a combination of water bottles with water and "sport" water, like vitamin water. For longer rides I take the camel back. I like to err on the side of more water than I think I will need if I'm riding where I can't refill. Same for food, I always take more than I think I will need. I absolutley love fig newtons since eating one at a time is easier for me than trying to eat a whole power bar (granted I could eat just part of the bar, but then it can messy trying to save the rest). If I'm unsure whether facilities will be available I bring some tp in a plastic baggie so I don't have to drip dry. I always have a small amount of cash, a credit card, my ID, phone, tube, pump, multi-tool, presta-schraeder adapter, my asthma inhaler, and a patch kit in case I get more than 1 flat.