You could use a magnifying glass outside on sunny daysI've been messing with some ideas and I figured out you could squeeze ejuice covered cotton in tweezers and insert it into a small metal tube and heat the tube around the cotton with a lighter. It works pretty well... like a vape crack pipe
I used the body of a metal pen that I sanded down to remove the coating
Practice? No.. does it work? Yes
What kind of metal?