...To make or form a 2D or 3D shape by combining or arranging parts or elements. Many of our assembly puzzles are crafted from the best hardwoods or crystal clear acrylics and are finished beautifully. Use these mind teasers for desk ornaments, sculptures, stress relievers, or just plain ol' fun. Browse our collection of mind teasers by clicking on the category links below, or, use our navigation menu to the left.