Mama SkewbHybrid of Meffert's Skewb & Skewb Diamond puzzles.
MarbleminxA Jings Pyraminx truncated into an almost sphere-like shape.
Mental BlockToday this can be considered as one of Tony Fisher's classical Skewb modifications.
Mental BoxA truncated Container or less extended Mental Block.
Mental PillowA skewb shaped like a pillow and rotated inside the solid.
Mental PuckA Mental Block truncated into the shape of a cylinder.