First you take a bottle, very much like this one.
And then you get your hands on a glob of lights, very much like these green ones.
What? They don't look green? Well they are, trust me.
See? I told you. Okay, now here is the hard part. You take your glob of lights , insert them into the predrilled hole at the bottom of your bottle and presto, there you are. One green bottle lamp.
Those are LED lights and they are pretty bright, especially when you get 100 of them going at once.