My never ending quest for better clip art sources (I can’t draw a straight line with a ruler), and my desire to make Ubuntu more and more usable for all my work needs, converged with OpenClipart.org. It’s a good source, and you can install it in Ubuntu with your Add/Remove command.
But then, where is it? This is one of those simple questions that probably everybody but me already knows, but I didn’t find it quickly, and finally came upon this post that explains it. It’s in /usr/share/openclipart. That’s easy enough to navigate to, though a bit inaccessible, so I added that to “Places” in my File Browser, thus making my life easier.
And a great addition to my available clip art it is!