Flat pack the bubbles and supply them without the air. The user at the other end then just has to re-inflate them when they want to use. They just need to find a source of hot air, to make them light. now anyone with a suggestion where they may find hot air.

A good curry does it for me, I eat the food then transport myself to another place then the warm air bubbles are released. I've never tried to bottle them however :-)

You can buy big plastic rolls of air bubbles - useful for all sorts packing materials insulation - heck of a mark up I bet? Alternatively follow a scuba diver around and catch the bubbles from them - you can then squash them all together really tightly and put them in a metal bottle and sell them on again - recycle?? Is it Friday yet? Stu