Okay, spent the evening tinkering around with dessicant boxes for the thing. At some point I wanted to try using the mess trapping technique, however, I remembered I want to print the boxes in vertical orientation, so whatever clamps I make, have the best possible strenght: This is what I have come up so far. Not necessarily the final product, but it's a start. The idea is to have two per shelf, if not 4. And I haven't figured out the holding yet.