That Keurig holder is really nice! I got my shipping notice for my Longmill today so I am jazzed and need to get designing useful things like that.
We have a wire mesh Keurig cup holder that someone gave us with the machine that is basically a little drawer with dividers that the machine sits on top of so you don’t take up any extra counter space. Slide out the drawer, check the rows for what you want and slide it back in. Maybe an idea for the next revision?