I suppose the heading could have been How Does It Work? But isn't Village technology wonderful. If there's something they haven't got, they'll make it out of something they have, even to the point of converting something like a simple hairdryer! I wonder what it does now? It's use seems to be for reviving No.6 after the brawl with No.2, but perhaps it's use is to help keep No.6's mind regressed to his childhood.
Then on the other hand, it's probably the properies department of the production making good use of what they have to hand in the prop department!
I'll be seeing you - after I've been to the hairdressers!