This is a frame for wall-mounting a Surface RT tablet. I did this to use the tablet as a touchscreen for my SmartThings-based home automation system.
The black color of the tablet did not look very good on my white walls, so this frame gives the project a more finished look.
The frame includes cutouts for the Windows button, the power button, and a small cutout for the power cord. Note that the frame is slightly wider on the right-hand side to allow the standard magnetic power cord to be hidden within the frame, exiting out the top (see pictures below).
Also see my Microsoft Surface Power Adapter Under-Counter Mount at: https://www.thingiverse.com/thing:3462358
For software, I am using the "Kiosk Browser", viewing a web service called "ActionTiles" (https://www.actiontiles.com/). ActionTiles is set up to access my SmartThings system.
Depending on the size of your print bed, you may need to slice this object into two sides, print them separately, and use Crazy Glue to put it back together. After doing this, sanding the front helps remove the visible joined area. In the pictures below, mine is split at the Windows button.