This is quite frankly not much more than a silly idea, but I just had to because my camera bag perfectly fits a 3x5 Gridfinity baseplate.

More seriously, I've started to more frequently change which lenses I want to carry as of lately. This was a PITA to do with the velcro dividers that came with the camera bag. With magnetized Gridfinity baseplates and bins it's very quick and easy to secure the blocks in place inside the camera bag. Re-organizing the bag is no longer something I need to refrain from doing 😁

One weird quirk in these are that some of the blocks take up 1.5 slots in one dimension. This helps cram a bit more stuff into my bag which won't fit 4 slots along that axis. The middle point of the cylinders that hold the lenses are a bit offset, with the intention that you can place two of these 1.5 slots facing each other without the lenses bumping into each other.

Attached Fusion 360 source files so you can customize these to match your lenses perfectly. I recommend leaving ~1mm tolerances in measured diameters.

I should design some 1x1 blocks next to store various smaller items…