I wanted to have an easier place to store filters, so designed this to hang off the side of my CupOne machine using minimal material.  It projects the filters away from the water caraffe so they're easier to grab, and holds a pretty sizeable stack to have on hand.

It does require supports when printed, but they snap off pretty easily.

If you want to remix, the design can be found here: https://www.tinkercad.com/things/lYq0zSkveyA-moccamaster-cupone-filter-holder