In cold climate waste heat from electronics isn't wasted.
Also I think some old customs were really ecological just because of being used to scarce resources. For example - my grandpa have old ceramic stove for cooking in the kitchen. It has pipes with water inside - additionaly heating water for washing, when you cook. I've always thought it's a great idea.
My grandma also had big plastic bucket in the tube in the bathroom, when you washed your hands during the day you did it over that bucket. When you needed to flush the toilet, you first used the water from that bucket, only if it was empty you used built-in "flusher".
These things weren't really needed anymore, but that generation got used to not waste anything.
Also I think some old customs were really ecological just because of being used to scarce resources. For example - my grandpa have old ceramic stove for cooking in the kitchen. It has pipes with water inside - additionaly heating water for washing, when you cook. I've always thought it's a great idea.
My grandma also had big plastic bucket in the tube in the bathroom, when you washed your hands during the day you did it over that bucket. When you needed to flush the toilet, you first used the water from that bucket, only if it was empty you used built-in "flusher".
These things weren't really needed anymore, but that generation got used to not waste anything.