I had no idea when this area began that folks would be this generous.
It's great, even though some of the contributions aren't strictly "clip art".
So, who cares...and here goes:
I created these brushes for Xara as a gift accompanying The Official Guide a couple years ago. If you already have 'em, consider yourself a gifted person. If not, all you do is download and open the XAR file, and then copy any path of ornaments you want to use to a new document. Last I knew, custom brushes are document-specific, so just move the string out of the way, or shrink it on a margin, and then with the Freehand and Brush tool, choose the ornament series from the brushes drop-down, make a test stroke to glean the size of the brush, adjust if necessary, and ho, ho, ho, away you go.
Fool Disclosure: The document is about 5MB because many of the ornaments are bitmaps, specifically high-res guys so you can print with fidelity.