Challenge Entry Hot Air Balloon (Tensegrity) This entry did not advance past the phase. By HappyHumorousMelon 7 comments Description Updates 0 Comments 7 Official Comments 0 Idea Updates 0 Comments 7 Official Comments 0 There are no updates for this entry yet. By HappyHumorousMelon 7 comments More To Do Product Idea Submit A Product Idea Submit Now