After printing some customizable outlet covers, I realized they really didn't do the one thing I needed...provide real extensibility to store items or wrap cables. This solves that and I've included files so people can create attachments for their own outlets. In this thing is the cover, a square pocket attachment, a cable wrap attachment, and in Sketchup format the ability for you to go further! Please link back to here with your creations!
This was based on the WALLY customizable plates for an outlet cover, which I manually simplified and cleaned up the faces before using.
2012/11/06: Added 3"x2" larger pocket size by request.

Print and enjoy! I printed mine in White PLA. I had some problems with torn blue tape, therefore the cover is sanded and painted, which is why it looks strange. I'm sure yours will be better.