My roommate and I bought a bunch of flying toys on sale following Christmas. We got our fun out of them, but over the past few weeks they’ve begun to break, but the rotors fail, while everything else is fine. We took the electronics and motors from one and mounted them to balsa wood gondola hanging from four Wally world helium balloons. It cost about $22 and took less than two hours.
Here’s a link to it flying: