About 6 months ago, I stumbled onto the Ben Heck Show and binge-watched several episodes before deciding to try some hardware modding myself. Here's my first project: The "PiSP Pocket"! I.e. a raspberry pi crammed into a gameboy pocket. The Pi-inside-a-GBP isn't an original idea but I think the dual analog sticks is unique, at least in terms of execution. I was inspired by this photoshopped image.
The rpi3 plays N64 perfectly, Dreamcast mostly perfect, and PSP surprisingly playable with a decreased frame rate. I'm quite impressed with the performance compared to the rpi2. It's been fun playing these systems on the nostalgic GBP form-factor. Though my adult hands get a skosh achy after a couple hours of playing heh.
Thanks for looking!