I like to think of each light as a mini, personal chandelier.
Egg cartons, emptied. Preferably the cardboardy ones. Scissors, paint and Christmas lights.
Start by cutting up the carton until you’re left with 12 little pieces per carton. I had two so I ended up with 24.
Then paint to your hearts content. Or not, you can leave them plain. You’ll poke each light, individually through the bottom of the carton piece and then watch magic happen.