I designed such that the little light that blinks when there are new notifications is hidden inside the slot, since while I am working at my desk, the light is very distracting.
First I made a very simple model of the plastic top in Blender. For making things that require accurate measurements in Blender, I set the units as metric and then the scale as 0.001, which makes 1 blender unit correspond to 1 millimeter. This ensures that when the model is exported to STL format it keeps the right dimensions. I use my caliper to take measurements which I then use in the virtual model, then I print a prototype piece in low quality to make sure everything looks good and make any adjustments if necessary before I print the final piece.
I glued the micro usb connector with cement glue, and I ran the cable through a small slot which I routed on the wood. I will probably use velcro tap to cover it all and then stick it to my desk.
The bottom is made with two layers of 1/2 inch plywood which I laminated together and then cut it to measure. I gave everything a couple of coats of spray lacquer.