Sick of having to babysit your Play during the first several layers? This is for you. Download V7
Update 4/15/16: New version, last update for awhile. This desgin (v7) looks like a winner :)
Update: 4/14/16: Completely parametized the design, so Andy's cable shelf is no longer necessary.
You'll need Andy's cable shelf if you want to modify the .scad.
Update: 4/12/16. Updated with V3. Much easier to print and actually works. Also uploaded an "all" file that shows demonstrates the iterative design process