I found these awesome tutorials for Inkscape:

First, the simple one: [link] about swirls. Very useful for hair and eyelashes!

And the other, a little more complicated, but pure fun: [link] -- post stamps! I just had to try it immediately, and here's the result: [link]

Well, it seems that for the next two weeks I'll be drawing various swirls and tentacles...
I'll also try it in ContextFree; it seems to be simple enough, and sometimes gives stunning effects ; )