Since I could't find a specific cover for my power supply (Anycubic i3 Mega), I partially made this one myself. I have added holes for the on/off switch and 4 holes for Tamiya molex plugs (no glue needed for these plugs because they fit nicely). I also made a few covers for these plug holes in case they are not used (some filing may be needed for these small covers).
I also include a mount which can for instance be used on IKEA Lack tables.
Everything should fit perfectly!
Don't hesitate to contact me if you have any questions or remarks. ;-)