Dieinahole

Go to junk shops or estate sales.

Cheap as fuck, work just dandy.

The fancy ones are adjustable, but most of the not fancy ones will do the same trick if you twiddle them right

Probably dumb idea, but what about taking hydrogen and oxygen, both of which can be compressed?

Plus, when you make water with them, they go bang, which definitely has some applications

?
This was overtly happening and reported on a couple weeks ago

You. Come sell my book