I just watched this video on YouTube.  It’s a guy who creates his own mini SNES by using a Raspberry Pi Zero chip.  He sculpts the enclosure himself out of plastic and clay and does all of the soldering himself for the connections.  It looks like a lot of fun!  I can follow what he’s doing, but I have never done anything like this myself.  I bought my PSP for the purpose of modding it, but just haven’t had the time to do so.  Maybe some day!