As you may have read on other Inkscape and open-source related blogs, the Open Font Library is holding a contest to come up with a logo. Since the rules require submissions to be in SVG format, Inkscape is generally the tool of choice.
The goal of the Open Font Library project is to: "... collect public domain fonts so that they may be used freely."
I've been having fun coming up with ideas and have submitted four so far. I've learned quite a few new things about Inkscape, most notably nodes, curves and what you can do with them. It hasn't made for anything interesting enough for a screencast, but it's fun figuring things out. Just like with programming, writing or other creative pursuits, it's amazing how much you can learn when you've got an interesting problem to solve.
There are lots of good entries. Check them out.