We used to just toss our reusable k-cups in with the coffee mugs. I wanted a better storage method and made this to suit our needs. This works with both single-use and reusable k-cups. The “single” will hold four k-cups and the “double” holds eight. There are four screw holes to mount to the underside of a cabinet or shelf. I used screws from my parts bin so I don't know what size, I just grabbed some that fit.

I had originally designed this and posted it on Thingiverse in 2018. I've modified the model to use a little less filament and I'm now posting it here since I'm using a P1S nowadays.