Gridfinity Magnetic Parts Prison

Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:6068065.

This 1x1x3 bin has space for up to 12 magnets to be glued into the bottom. Any parts that are attracted to magnets will be held inside the bin even if it falls over or is dropped. You can easily get them out using the curved bottom (similar to other GF bins).

Magnetic parts cannot escape but you can still see them.

You don't have to use all 12 spaces for magnets. You could leave some empty.

Don't try to glue all the magnets in at the same time! You might need to use a nail to hold a magnet in place while the glue is drying so it doesn't get pulled out by nearby magnets.