I really love stirling engines. Even built a model that works. (barely)
And the thermoacoustic ones are genius on top of genius. I just hope this technology really matures and gets affordable.
Till then one can still have a small thermoelectric generator.
Cats say "meow" because they think that is what people sound like. This tiny ad told me so:
montana community seeking 20 people who are gardeners or want to be gardeners