Dogecoin is doing fine: https://coinmarketcap.com/currencies/dogecoin/

I really should find my wallet and make myself the 50 cents richer as a result of heating my apartment one winter using my video cards...

I always though it would be funny to offer people free radiators that were just hot mining rigs.

A Dutch startup is hosting servers in people's homes for heating. https://www.nerdalize.com/heating/

Very expensive radiators, a little problem to overcome.