So I decided to try something interesting, this program called Alchemy. Which is a sort of sketch/digital paint program like photoshop or painter. It does either bitmap or vector and allows you to work in a process of abstraction and experimentation with your sketches. Drawing environments, creatures, people, or whatever subjects that appear within the white space.
I did a couple, so give them a look and interpret how you see them. Some say they see things I don't even recognize and it brings a lot of thought on what can be done through simplicity of shape and color.
I recommend this for some casual sketching/ideation. I think it helps to expand the mindset of visual exploration. http://al.chemy.org