A neat idea I read somewhere (not here, but elsewhere on the expanse that is the internet) is the use 2 liter soda bottles for water. Not original, I know, but to carry them, a sweatshirt.

Sew up the cuffs on the the sleeves, and stuff the bottles down the arms. Wear over your shoulders with the arms hanging in front of you. The site also recommended sewing up the bottom of the shirt and using it like a "back pack". I would just leave as is and use the "body" of the shirt as a back cushion for a back pack.

Just a thought. What do you think, sirs???