Take all your empty cans out in the blizzard this weekend and report back when your *** thaws out.JohnnyYou » 23 Jan 2026, 7:44 am » wrote: ↑ I saw a soda can solar heater on youtube.. Tubes in a box in the sun made 150F heat in a guys shed.
There are also peple making DIY biogas.
Unfortunately there is no inventory at Harbor Freight for what I want..