I had seen variants of this project all over the internet and if I had know quite how simple it was going to be in would have already filled my house with lamps!
I found the demijon at a carboot sale glimmering in the early morning sun for only £2 and it was love at first sight! The lamp kit came from amazon but rumor has it local diy type places stock them too (just not where I live!)
It’s a complex process of jamming it into the top of the bottle until tight. My bottle neck was a little large so a hodge podge of white tack did the trick and you can’t even see it in the day to day life of a lamp!
Add a shade ( mine was cheap!) and plug it all in, make a coffee and bask in your new glow!