http://klgaffney.dreamwidth.org/861863.html

30 Days, 30 Prompts – your responses can be in any form you like–lectures, songs, articles, recipes, costuming, art, fic, dance, wherever the topic takes you! The only requirement is that the response somehow defines, reveals, or demonstrates an aspect of your world in line with the prompt. E.g., a builder may choose to respond to the Geography prompt with an evocative list of blended scents and how they relate to different areas.