Amazon.com: Wave Form Helix, 4" Closed Length x 3" Diameter - A Scientist's Version of The Classic Toy - Eisco Labs : Toys & Games
Amazon.com : Helix Lateral Trainer Model H905-3D – Adjustable Training Machine for Residential Use| Fitness Home Trainer for Weight Loss and Body Sculpting : Exercise Bikes : Sports & Outdoors
FIRST LOOK: Rendering of Amazon HQ2's 'Helix' building in Arlington - YouTube