got milk?
1. get one of them el cheapo front racks that bolt to the brake mounts. (see recent threads)
2. get a seatpost mount rail rack. (good enough until you know what ya wanna tour with)
3. add two 2-liter soda bottles (pop bottles for those in the middle kingdom)
4. stick 'em in the freezer overnight (leave some expansion room!)
5. bungee your ice blocks to the racks. or use a velcro-strap beer cooler if you want
the ice to last longer.
6. carry a couple extra soda/pop bottle screw on caps with holes drilled for a shower.
(a sewing needle heated in a flame will go right through them plastic caps)