Requires a 2x2 Lid from(https://www.printables.com/model/479851-gridfinty-go-boxes-with-filament-pin-latch-update-)
Should be cleanup-free, just stick a filament piece(Preferably PETG for the pins, the model itself is fine in PLA) through the front and back holes, to form the hinge and the latch.
You probably want to disable ironing in Prusaslicer for Gridfinity Go boxes or anything with similar top tabs, the tabs on top are poorly anchored with it on.
The author marked this model as their own original creation.