After getting some bone conducting headphones, I noticed things like the old virtual barbershop demo worked eerily well. This kind of got me back on the thought process of getting my hrtf measured. After some searching it seems like there are still no good methods for doing so at home
The basic idea behind this is to expand upon a normal rubik's cube solver by allowing the user to upload custom shapes. Inputting the scrambled cube would then become an issue, but I think allowing users to make illegal moves like rotating corners, flipping edges and and swapping
Using the rpi pico (1 or 2) I think it should be possible to emulate an sd card with a minimal amount of memory. I think this would be useful for bare metal os development experiments (at least when just starting out). I believe via pio it should be possible