All-shape building blocks may be shaped as platonic solids. All-Shape building blocks include a flange on each tetrahedron edge, where each flange and each tetrahedron vertex may include magnetic materials (e.g., magnets, ferromagnetic metals). All-Shape building block flanges may be used to capture kinetic energy from a fluid. Multiple All-Shape building blocks may be combined to form larger structures, and the included magnetic materials may be used to retain the formed geometric structure shape.