I had a chance to do a little life drawing (painting?) this past week. These are PanPastels on a smooth card-stock from a stationary store. They are applied with rubbery, foam applicators. It's really fun to use and I highly recommend a small monochromatic set of some sort. I think I have a white, a black and 3 grays, which is plenty - tho I want a warm set now, too so I can play with temperature!
It's a lot like painting with dry media. Quick to setup and cleanup. Of note, these survived being beat around in a sketchbook without noticeable degradation.