So I've already settled on a dandelion theme. But I'd forgotten the fantasy element, so now I'm thinking of a cartoonish face having a "bad hair day." I have a cartoon I've planned to use for a tapestry, but with a little tweaking, the image (or one like it) would serve for my dandelion head.
Only with whispy dandelion fluff hair blowing in the breeze. 8-]