Thermal paper is what receipts and faxes are printed on. I enjoy it because it is often unpredictable. It reminds me of when I used to paint with watercolor (my first love) because you cannot totally control it and have to let the medium to some extent take you away.
I use heat to create images, therefore there are endless ways to use it. I love what the use of heat represents, for example creating art using a cigarette versus a hair straightener have different connotations. I have some ideas I am playing around with in my head with the use of this medium.
For an example, here is a piece I recently finished using thermal paper.
Thermal paper, acrylic, wood panel
I have more in the works and I will be updating you as I finish them! Meanwhile, have there been any great mediums you have discovered lately?