Then there's the stuff that some people call picture puzzles, my favorite of which is simply:
--or the "rebus."
as well as some brilliant samples posted by my sister,
who's much more skilled than I am at finding stuff
Finally, two more sources of a sort of art chirography or (ew) graphically representational words are the classic Magnetic Poetry kits and my personal preference among thesauri, of all things: Visual Thesaurus.