The HP pornish_pixies had a whole challenge dedicated to this a while ago. There are links to "inspiration" stories in the initial challenge post (http://www.livejournal.com/community/pornish_pixies/241323.html), and here's the list of stories (http://www.livejournal.com/community/pornish_pixies/253476.html).

PP is an invite-only comm, so the general quality is pretty good. Also, anniesj's stories "Just Desserts," linked in the first post, is pretty great.