Another Stanford design that looks interesting are these flying drones with winches, that can attach small cables to objects, then clamp themselves to structure

Another Stanford design that looks interesting are these flying drones with winches, that can attach small cables to objects, then clamp themselves to structures and haul away: "Stanford researchers modify small flying robots to haul heavy loads" https://youtu.be/GEJhb93rKlUO https://youtu.be/GEJhb93rKlUO