One-Block Wonders Cubed. Discover how to create amazing optical illusion on fabric with these easy techniques using simple geometric shapes. Take your quilting to a higher dimension with this stunning new volume filled with techniques and design strategies for using simple geometric shapes to create dramatic imagery that seems to defy logic! "One-Block Wonders Cubed!" features 10 fantastic quilt designs, plus bonus projects for leftover fabrics - such as tote bags, coasters, and placemats.