I was thinking that you could maybe have an episode or two dedicated to making a wrist computer out of the raspberry pi something akin to a Pipboy 3000 but a bit more on the usable side. Start off with a raspberry pi, desolder and remove or relocate unnecesary parts (the RJ45 port would hardly be useful in a wrist computer and it will be thinner without it; the SD card slot should be moved to the outside of the project for easy access, etc), add an approriately sized touchscreen and a battery pack and shove it all into a custom enclosure. Doesnt have to be perfect, just needs to be more of a proof of concept. I'm working on something like this right now and it would be greatly helpful. Besides, who doesnt want a wrist computer?