A huge swarm of flying drone manipulators in a manufacturing facility. There are already demos of this: https://www.youtube.com/watch?v=JnkMyfQ5YfY https://ww

A huge swarm of flying drone manipulators in a manufacturing facility. There are already demos of this: https://www.youtube.com/watch?v=JnkMyfQ5YfY https://www.youtube.com/watch?v=JnkMyfQ5YfY ...but drones use so much power that it's unsustainable beyond demos. Beaming power to them suddenly makes this useful because you can keep them flying indefinitely. I'll predict that if Disney actually have this working beyond a prototype, we'll see demos of drone swarms building complex objects out of children's bricks within a year, and prototypes of tool-wielding drones actually doing assembly within another.