Save filament.  Save print time.  No magnets. 

These are gridfinity bins with 1.1mm walls and without the wasteful grid.   Sizes 5x5 and smaller in various heights.

Your toolbox probably has drawer liners so the grid isn't needed, and drawer liners dampen noise and prevent things from sliding.

 Just a smooth bottom with the tapered edge so it still stacks up like gridfinity.

The sizes are listed by gridfinity units.