Waveshare 7.5" screen and Rasberry Pi case

I built a very slow movie player and I built my own snap-fit case. It features a perfectly-sized window for the display, with slide in holding mechanism for it, a 10 degree tilt up, pegs to fit a raspberry pi 4, and a cutout for power. 

When printing I added a modifer part that removed the top and bottom layers for a couple of boxes and used a hex infill to create 2 an un-modeled air vents on the bottom. If you do this, I recommend adjusting top/bottom height to leave 1 layer of infill that covers the whole bottom. Otherwise the vents will be rather weak.

To prevent corners lifting up, consider a disc on each corner.