I just discovered this website with lots of free, high quality line art.
http://www.briarpress.org/cuts/browse?m=free
I find putting in a little decoration with chapter headings give a book some sort of identity.
I'm curious if other folks have found sources for things like this. I'm most interested in decorative lines. And free.
BTW, I'm not associated at all with the website above, I only mention it because they have free stuff.