I'm not sure if I've posted this before, but I just wanted to share what I use in my campaign for monster tokens on the battle maps.
They are essentially pictures taken from all the published material and almost any other fantasy art I could get my hands on. I simply take away some of the background, to get a nice clean and white look. After that I shrink it down and put it into a nice 1x1 inch square. I take a full sheet to Staples, print it off and then I glue them to card stock and cut them out.
If people are interested I'll upload all 20 pages of them. I've printed multiples, so I have thousands of different monsters. Also, I have a second sheet that goes on the back of the counters which has their name on it.
If I've already posted this, I apologize. I have a bad memory.