Hey Ben,
I really like your show and especially your custom and retro builds. As I grew up with an Amiga 500, I'ld love to see a build of an Amiga clone but it should be portable and use much less space then the original. I already found MiST, an FPGA based Motorola 68k board on the web. Maybe you can use one of these boards to build a multi purpose Motorola 68k system (not an emulator!) as a portable system providing an internal keyboard, display and speaker, an external mouse and ideally a small portable joystick on the device or somehow stored in the device to be pulled out if needed.
All the best,
Thomas