This weekends nerd project, Remove the optical drive out of a dreamcast and install a GDemu board.
Very easy mod, 3 screws removed the old cd drive and the GDemu card just plops in place ($40 off ebay), I did 3D print a shroud (which you can see in the photos) to make it look nice but it's not necessary (It also had slots to hold extra SD cards). Then just drop the disk images onto and SD card and you're good to go, the card here is a 128gb from Microcenter for $14...right now there are about 82 games on it. Just boot up and pick one from the menu.
(also replaced the internal battery because it was dead).
