I made a top cover for my 4Max. Pretty happy with how it turned out.
I needed to print 4 clips. I used 4 3mm screws and nuts.
I purchased a ArtBin Super Satchel 1-Compartment Box- Plastic Art and Craft Supply Storage Container, 6955AB from amazon.
I still need a longer Boden tube, I cannot open my lid if the print head is all the way forward and to the right side of the machine.