Nestene Energy Unit

[Rassilons Rod]

The neck hole would go underneath and be a place for any wiring for the lighting.

You could give it a go, can't see why it wouldn't work.

The mould would have to be two part, in order to get you bottle out again once you've blown it into shape. And you would also have to find a way of filling the neck hole of the bottle once you've moulded it. As there's nothing inside the blown section filling is going to be difficult, but not insurmountable