If you don't find what you want, you can make your own! Simply use the clipart of your choice (b/w images work best for me as they translate most easily for my newbie skills) and then have knitPro create a chart for you that you can then use for your dishcloth, or whatever you want to knit with the design.
http://www.microrevolt.org/knitPro/
Here is an example of what you can do...