Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:3367442.

Another Ender 3 cover. I took ideas from a couple other users and made some changes. This cover doesn't need any screws. I added snaps that lock around the board. There is a beeper cap included if you want. I extended the cap slightly so I could put a piece of foam in the end to dampen the sound more, also not my idea, but I can't find where I got it.

Just push around the edges and it snaps on well. To take it off I just bend the corner closest to the ribbon cable out. This will release the closest snap and then you can get your fingers under to take the rest off.