I had these IKEA IHÄDIS spice jars in our flat spice drawer.
Due to their awkward shape, storing them is awkward also.
Hence this little T shaped bracket, which lies underneath the jar and keeps it nice and organized.
The braces have dovetail joints to link them horizontally together (same row), and the verical joint (vertical = row above or below) is to link horizontal lines together to keep them nice and evenly placed.
The model is hollowed out as much as possible without causing print failure - this is simply to reduce filament use - 1 T bracket is about 3 grams.
As for print settings - you can use whatever you feel confident with. I am printing in PETG, settings as they are in the 3mf files. The print don't have to bear load or anything.
The ones on the photos are made on a Bambu A1, Kingroon transparent PETG