Getting a notification email for this topic, thought to chime in. Last year had to get a room warmed up so the new plaster would dry. After two days of settling, it had to have both air flow and light heat for the water to evaporate, so I dusted off the old L3+ miner and set it up to run air around the room while running an air dryer at the lowest setting. Didn't bring much in in coin, but was a fun to show to the workers that dropped by.

Another thing I've been thinking of is linking liquid cooling from for example a bitmain machine (https://www.coindesk.com/tech/2022/03/14/bitmain-says-new-liquid-cooling-miner-is-its-most-power-efficient-model-to-date/) to a central heating system. Mostly it's using gas to heat water to run through the radiators, but with an abundance of solar panels, even in winter there could be overproduction. Instead of pushing that back into the grid, could be used to heat and mine. unfortunately bitmain isn't giving them away exactly very cheap.