Some times this is how I start my paintings. When I don't have something that I already want to do I let loose and just start tossing color up on the wall (or canvas). As you can see from the beginning and the finished piece, some things make it and some don't. I do this to break up the space and to give me lines, colors, and shapes to look at. Rather than looking at a blank wall, I have something to work with.
(My work space.)