Originally Posted by
tarwheel
A Carradice bag would do the trick. I've got their smallest bag, the Barley, and it easily holds my lunch, wallet, cell phone, shirt, t-shirt, underwear, tools, batteries and flat repair stuff. You can buy Carradice bags for much less money (and more selection) from the various British on-line cycling stores like Wiggle, Chain Reaction, SJS or directly from Carradice.
I got my Pendle from Wiggle and it was dirt cheap. USA sites sell the Pendle for $100+. Wiggle had it for around USD $55, and I added a Bagman support rack plus some little things to make up the $83.00 for free shipping, and it still arrived in about a week!