If you're always losing your gas/electric meter box key (I always do) then you can now download and 3D print your own! I've included the OpenSCAD design in case you wish to modify it or see how it was designed.
For more information please visit: http://3DPrintHQ.com
This is a really easy print, so use any settings you like. Printing upright works well, but due to the small surface area on the build plate a raft helps it to stick.
Feel free to modify the OpenSCAD design (which I've included), or just take a peek to see how it's designed.