Creative uses for LT chalk and etch effects?

I'm trying to get a feel for effective use of the many objects provided with Livetype. The chalk fill and chalk mark objects seem pretty cool, but I'm not sure what to do with them. I tried creating text and matting it the chalk, which made it look the text was being erased. I could export the object and then create a travel matte for it in FCP or motion, which would also be cool. Any other creative ideas?