The BitAxe Supra Bitcoin Miner sells for $135 USD and runs on 11 watts of power.
Small enough to run on a 20 watt Solar panel.
You can mine 42 Satoshi a day with Braiins Pool (sent to your Lightning wallet every day) or set it up as a Solo Miner on Public Pool with a chance of hitting 1 Block (3.125 Bitcoin) every 10 minutes.
Every 10 minutes.
BitAxe Supra : https://d-central.tech/product/the-bitaxe/ref/Offgrid
The new BitAxe gamma will get you 1.2 TerraHash/ second for $148
BitAxe Gamma : https://d-central.tech/product/the-bitaxe/ref/Offgrid