Waterproof Box

First iteration of a waterproof box.
Made of three parts.
Box, Lid, and Fastener.

Between the Lid & Box you will need to put a sealing material.
I suggest something like closed cell silicone foam. Glue it in place.

Put the lid on, and place the fastener in, using the finger holes to get each tab in.
Be nice, this is the first version of it. maybe I'll improve it later.

Also, if you want the best fitting, you'll have to "tune" or slightly change these parts per your printer. Make it fit as well as you can so it's better at sealing out the water.