Xbox 360 Slim 3.5 inch HDD Mount

thingiverse

This mount will let you put a 3.5 inch Desktop Hard Drive where your 360's DVD drive used to be. It's designed to be cut with a CNC router, but you could probably print it just fine. Instructions I cut the mount out of 1/4 inch PVC on a CNC router. The spacer is printed and sits between the mount and the plastic bit where the DVD drive sat originally.