A simple divider for Elfa wire shelving to be used with 3mm MDF or similar. I would imagine it would work with the 3mm ply Bambu sells.

It clips on securely over two wires. I've been using it for a couple of weeks now and haven't had any problems with them coming loose.

There's a relief in the center to allow them to fit over the perpendicular reinforcing rods, since I was originally planning to use 4 for each shelf, but 3 ended up being plenty. They will also fit over the brackets if needed.

I originally tried making a fully 3D printed version, but quickly realised it was going to take a lot of filament, and I also had problems with them being too easy  to knock off with sideways pressure.