So in order to assemble one thing per week to compare results based on moon phase, I need to figure out what that thing would be. It should be cheap, contain a couple of 0201s - but not too much more to keep it cheap because I expect a lot of fail here - and it shouldn't be useless.

Feel free to make suggestions in the comments!

Once the design is decided on, I'll get a couple of PCBs made, order (or scrounge) components and build my dataset.