If you bury a heatsink, and then have an air-flow heatsink, it's plausible that you could power a Stirling Engine with this kind of power output.
You wouldn't do it for $5 though. Efficient Stirling Engines with a reasonable amount of torque actually require significant engineering, and that comes at a cost. However, they wouldn't require significant maintenance, they would provide power all the time that could be stored (again, at a cost), and might be able to trickle power an entire village.
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If you bury a heatsink, and then have an air-flow heatsink, it's plausible that you could power a Stirling Engine with this kind of power output.
You wouldn't do it for $5 though. Efficient Stirling Engines with a reasonable amount of torque actually require significant engineering, and that comes at a cost. However, they wouldn't require significant maintenance, they would provide power all the time that could be stored (again, at a cost), and might be able to trickle power an entire village.