Square-1.5A different square (2+1)/2 = 1.5
Unlike the Square-1 1/2 four of the broader pieces were split.
Square-1.75A square puzzle looks like a square-2, but with one quarter of the square-1.
(2+2+2+1)/4 = 1.75.
Square-3 PlusA Square-1, combining one layer of a Square-1 and one layer of a Square-2.
Squared Circle-2A Square-1 with a 1x2x2 instead of a 1x1x2 in the middle plus two independently turnable circles.
Stainless Steel 2x2x3This is a custom 2x2x3 welded and fabricated out of 1/8" stainless steel, nuts and bolts.
Stier3D-printed pieces glued onto a skewb giving it the shape of a bull.
StretchlabacusA variant of Quartolabacus with asymmetrically elongated bends.
SunminxA puzzle close to the Heaven's Eyes but on the basis of a dodecahedron.