If you know about Peltier modules, a solid-state fridge seems like an easy project. Pump 12V into the module, include a heat sink and a fan. Then you are done, right? According to [Peltier Power], ...

Way back I used a rather powerful peltier module to cool my GPU to sub zero temperatures. A secondary watercooling loop removed the combined heat of the GPU + peltier (in)efficiency. The GPU died as I ...

If you need to cool something, the gold standard is using a gas compressor arrangement. Of course, there are definite downsides to that, like weight, power consumption, and vibrations. There are solid ...