There's a bad joke waiting to be made about how many drones it takes to screw in a light bulb here, but we're not going to be the ones to make it (although, for the record, it took this guy two drones and nine bulbs).
There's something slightly reassuring about the fact that it took this drone nine attempts to screw in a light bulb, if only because it makes it known that humans and not yet completely obsolete. We're still needed to replace the bulbs and plug in the drones to charge, or at least until robots decide they don't need light and start using us as human batteries and then we're all screwed.