I couldn't find a shelf bracket that would match the ones already in our cabinets, so I made one.

The pins are sized to fit in a ¼" hole and I made two versions. One will clip onto ¾" plywood. I used some 1x12 material I had lying around so I made a version to clip onto that as well.

They are directional so you will need to print two “A” versions and two “B” versions for each shelf.

Print 3 perimeters and a pretty hefty infill. These are PLA+ and are plenty strong.