The first experiment has been to pop a drinks bottle in the oven. ;)
I put a dash of water in it and spun up the oven to maybe 150C. It made a little steam pressure as the temperture rose. Fairly soon the bottom of the bottle made a rather nice balloon! :)
I pulled it out just in time before it burst. It's thin but pretty strong.
The experiment has confirmed a few thoughts in my mind;
- it's doable
- the vessel needs containment otherwise the expansion runs away at the weakest point.
Next step... not sure yet. ;)