I've been using a lot of bearings lately, and I wanted some bins to store them and keep them at hand. The little tubes they come in fit perfectly into gridfinity, so I designed this bin. It's your basic gridfinity bin with a full scoop so the bearings don't roll around too much but are still easy to grab. Stackable, 2 x 4 units and 5 units deep.

I made this with Fusion 360's gridfinity plug in as a starting point.