1x2x3A very simplistic cuboid but a must for completionists.
2x2x2 X-CubeThe concept of the X-Cube adapted to a 2x2x2 with spherical cuts.
2x2x5Another cuboid in the 2x2x6. Implemented five years after the 2x2x6.
2x3x5A cuboid made from a 2x3x3. The original puzzle received two new layers of pieces.
3 Square in 1Three samples of a Square-1 combined with what looks like a 2x2x2.
3D-Skewb cubeA mass produced piece shuffle. The pieces of a skewb and a skewb ultimate were exchanged.
3x3x5 OctahedronA variation of the 3x3x5 (by that time no mass produced puzzle!) inspired by Trajbers octahedron.