You can see Lightningbolt's mug at http://pct77.org/adz/2001_gear.htm . You can see his cup too! > At the 2001 ADZ, I think, Brawny and friends made a light weight insulated > cup from a soda bottle, pre-shrunk with boiling water, then wrapped with a > cut styrofoam cup and held together with duct tape. Simple, light weight > (approx. 2 oz.?) and definitively low-tech.