This may not be the right place for this
I have seen a variety of posts using incredibly well done visuals to help convey concepts. As a large number of our responses revolve around proximity, placement, shape, size, etc. I think it would be beneficial to have a list of tools that help create these visuals, the scenarios they're best for, as well as their strengths and weaknesses.
Maybe not just for answers, but for questions as well. Would it be worth adding a guide to the wiki with this sort of information?