I taught myself to make flowers by singeing fabric. It’s pretty rad– if you hold the edge of the fabric over the hot air above a candle flame, it will start to curl and warp. Layer a bunch of pieces, et voila!
It really drove home a point my professor made in Intro to Glassblowing, which is that you should always wear natural fibers when glassblowing. Natural fibers burn, man-made fibers are plastic-based and will melt to your flesh without catching fire first. So polyester works really well for this. I almost melted a piece onto my thumb.
And it’s yet another hobby where I’m exposing myself to unhealthy fumes. Acid/hard ground/paint thinner? Check. Epoxy resin? Check. Melting plastic? Check!