@killyourfm I've dug out my 5th gen and started speccing upgrades.
Obviously I'm gonna replace the drive with flash memory and the batt with a fresh one.
I'm tempted to get a new casing in some funky colours. But the screen has dead lines of pixels which unfortunately doubles the cost of renovation and as the faceplate is in pretty good condition I might hold off on that.
I bought this thing second hand back in 08 specifically to run Rockbox on it, I never used the Apple firmware.