1x6x3u stackable gridfinity holder for the gearwrench 3/8" ratchet 9" 81208T: https://www.gearwrench.com/all-tools/ratchets-sockets/ratchets-drive-tools/81208t-38-drive-90-tooth-dual-material-teardrop-ratchet-9
The handle grip sticks up a little into the stacking region in the 3u variant. If that is concerning try the 4u variant.
The grab point is at the center of mass.
I also tried adding stack nubs so you can stack bins on top without them sliding around.
The author marked this model as their own original creation.