A Gridfinity bin of size 2x1x3 with a tab in the middle for easy pickup.
I love these small bins, and we use them a lot at home. Sometimes though it is hard to pick them up when there are many side by side. This tab made it easy to pick up even if it is pressed against other bins, or the side.
Of course it works just as it used to, so it is possible to stack, and allows other bins to be stacked on it.
Original designer of the bin: https://thangs.com/designer/pmcquay/3d-model/gridfinity%20plain%20bins-61698
The author remixed this model.