My "solution" is a $5 mug heating pad that pulls 16W. It only heats when there's a weight placed on. Probably accounts to 10kWh for the whole year to keep a war

My "solution" is a $5 mug heating pad that pulls 16W. It only heats when there's a weight placed on. Probably accounts to 10kWh for the whole year to keep a warm cup of coffee ready for the whole day.