Here is my contribution: The two "Mega Tubes" mounted to my rear rack each hold a 1.5l Primus bottle: very elegant. Not so elegant is the $5 gas station 1-gallon tank mounted to the rack with two hose clamps. That was to be my true emergency fuel stash. I added this for a ride where we expected to need 150-mile range between fuel stops. We stumbled across a few additional gas stops on the route (Michigan's Upper Peninsula between Marquette and Copper Harbor) and I never had to use any of the extra fuel.