Hi guys, recently I tried something new - a foil sleeves. I bought 60cm and 80cm wide, the foil is 0,1mm thick. They are cheap - about 0,5€/m. Tightly inflated 60cm sleeve has diameter about 42cm, and 80cm sleeve - about 55cm. I sealed both ends with a rubber bands, it hold the air very well. Inflated foil sleeve is stronger more than I expected, much better than garbage bags. And it doesn't smell as bad as most vinyl toys or garbage bags. A few photos in the attachments, in the last photo I'm sitting on 60cm wide (42cm diameter) foil sleeve balloon.
Foil sleeves
