The Snowflake Challenge is back!
From the intro page:
Ever other day, starting on the first and running through the twenty-ninth of January, one of us will post a challenge or idea or prompt. We will also be hosting a friending meme on the thirty-first, to close out the fest.
Participants use your own space to respond to that challenge in whatever way suits you best. If you like, you can drop a comment on the challenge post and link to your response, so that you can share your thoughts with other fans. Please comment, interact, and celebrate each other, as all together we are what make up fandom!
There is no minimum for the number of challenges you have to do. One is a complete acceptable number, as is zero, as is all fifteen. You do not have to do them on the day they're posted, and you can do them in any order you please. You are free to interpret "fandom" as widely or as narrowly as you please, and talk about any kind of fanwork or type of fandom interaction you can think of.
The main platform is on Dreamwidth but they're also on others. Check the intro entry there for deets.