Holds 4 Brother TZ style printer cartridges (24mm/~1 inch) in a 2x3 Gridfinity space. They are held ‘vertically’ so that they take up minimal Gridfinity squares on your baseplate.
There's a bit of wiggle room so with a bit of perseverence you can force the cartridges in without unwrapping them which I assume will save them from drying out quicker.
The author remixed this model.
Widened for working with 24mm (~1 inch) tape cartridges