Me too. I’m thinking that I could make one of those small ones for about 30 bucks. Get one of those plastic 4 shelf units from Walmart, and buy some heavy duty plastic enclose it.
Set it on the patio next to the brick wall facing southwest. When the sun is out, it would heat up the brick for release at night too. We have an outdoor electrical outlet, so could plug in a 100 watt bulb on one of those metal lights that you can hang....
Anything bigger, and Hubby would have to get involved, and the price would go up. I’d also have to get one of those automatic window opening temperature things.
I freely admit that I would otherwise let the heat build up too much or forget to close it for the colder night time temp. or something.
I’d love to have one. It doesn’t have to be fancy.