A mixed media painting I did today, done on a brown envelope. It didn't scan in very well, but the surface of the envelope worked really well for applying paint thickly. I used loads of ink too and it didn't warp the paper at all so that was a bonus. I'm going to try a few more in a similar style over the weekend and see if I can do some better scans.
The picture was done in acrylic, ink, pen, and some oil pastel.