This is the kind of thing I like to do while keeping HB company at night when he watches TV. I can doodle and still keep up with the show if I want to, or I can completely zone out and not pay attention at all.
This is the marker piece that will eventually become a painting...that may or may not look anything like this in the end! I like to test drive some of my paintings and I usually do that with markers. They're fast and easy to use and I can get results that give me a good idea as to whether or not I want to pursue it any farther.