Fractal Imaginary Cube Shadows: these 3D printed fractals have an odd property- each can cast a shadow of a square along three orthogonal directions, identical to shadows that would be cast by a cube. As demonstrated, each fractal looks like a flat square with no holes when aligned along one of the shadow casting axes. These 3D prints were produced by mathematician Hideki Tsuiki who discovered this imaginary cube property of the Sierpinski Tetrahedron (center in green) and then found the “T” and