Made a simple wall mount for tablets, cell phones, flat monitors or any other flat thingy you want to attach to the wall. Devices with 11 to 11.8mm in thinkness work best. Width and height does not matter.

Print on the bottom or on the outer side at 0.20mm or less. Depending on your device's weight I recommend at least 3 perimeters and 15% infill. Material depends on your environment. PLA worked for me since my device does not get very warm. No supports needed.

Attach with wall plugs and small countersunk bolts. Other screws may scratch your device's backplate. First of all almost fully tighten one side with a single screw and obtain the width of the spacing by putting your device into while the other side is loosely on the other edge. Level everything and mark the loose mount using a pencil etc. Add some microns to your taste before the final tighting as the device's fit may be too tight otherwise.

I exported both sides just in case your slicer is not capable of mirroring ;-)