Here's a couple of monsters from a collage I'm putting together with some of my friends. It's a fun project. You can do it too, just find some friends, copy paper, ball point pens, and crayons. Get everyone to draw a massive amount of monster doodles, color them, cut them out, and then glue them on a really large sheet of paper, mine is about 2.5' X 4.5'.
It's especially fun to see your doodle style directly alongside your friends'. You learn fundamental things about how people think about drawing and how they use color.