I have a small 6 gal Waterbox Clear Mini that I used for a freshwater aquascape on my home office desk in our basement. Our cats were overjoyed when they first saw this and love to sneak under my desk and wait for me to leave so they can play with the fish. I knew a custom lid for this would probably cost more than the tank itself so I 3D printed a frame and glued in mesh window screen. My printer is only 4"x6" so I chopped up the model and printed it in 6 parts. It's not the prettiest thing but it works!
