**Vertical Spiral Tower** - **Concept:** Arrange parallelograms in a spiraling pattern around a central axis, gradually shifting their angles to create a twisting, upward-moving sculpture. - **Arrangement:** Use 20 pieces; each layer consists of 3-4 parallelograms angled slightly differently, stacking vertically with balanced distribution. - **Balance:** Distribute the shapes symmetrically around the axis to maintain stability while creating a dynamic visual effect. See more