With my tea living on a IKEA Mosslanda picture ledge/shelf, I needed an adapter for the stackable Tea Bag Dispenser by pwnate.
This adapter places the dispenser in the middle of the Mosslanda shelf width, and sets the bottom dispenser opening flush with the shelf ledge, so you can easily access your tea.
It also has a simple hook-and-cutout interlocking system so you can print multiple adapter modules and snap them together.
The middle connector (printed in my version without bottom and top layers for the juicy hexagon pattern) just exists to give the adapter some rigidity.
You can enable snug supports on built plate only in PrusaSlicer for the side cutouts, but they would probably print well enough without any supports, as the bridges aren't very long there.
Mine was printed in PLA, 0.4mm nozzle, 0.2mm layer height and 15% hexagon infill, but really anything will work. There is enough clearance built-in for the side nubs and cutouts to work.
The author marked this model as their own original creation.