This is a little organizer for a wood dowel jig sold by Taylor Toolworks under the description: "Dowel Drilling Guide Jig Kit 3" Square Base Hardened Guides 3/16" to 1/2"".
I printed this on an MK3S+ with PETG filament. The nozzle was a 0.8mm at 0.4mm quality. No supports were used except for a small cube shaped hold on the bottom side of the base.
A rubber band is used to keep the lid from sliding out of its slot and to keep the dowel jig held up in the base.
The author marked this model as their own original creation.