Waveshare 8 inch HDMI LCD Hanging Mount
I remixed czipis's stand to hang a Waveshare 8inch Capacitive Touch Display, 1280×800, HDMI Interface from my monitor. Uses nothing else that wasn't included in the package except for command strips for the hanger
Print includes a left and right arm bracket and a dovetail mount for each one to slide into. You should print the arms on the Y-Axis, with the dovetail mount sticking in the air with supports, they should pull off pretty cleanly since there's a fairly big gap. I drilled out the actual screw holes with a 3/32" bit pilot before screwing in the standoffs, but if you use the original screws and some elbow grease you can tap the holes pretty easily.
I included two angles for the arms in the files, I'm using the shallower (30°) one on my monitor.
Update: Added another arm with a cutout for the touchscreen USB input.
If you are interested, I also shared an enclosure for the panel that is compatible with this mount.