In your own space, create a fanwork. Make a drabble, a ficlet, a podfic, or an icon, art or meta or a rec list. Arts and crafts. Draft a critical essay about a particular media. Put together a picspam or a fanmix. Write a review of a Broadway show, a movie, a concert, a poetry reading, a museum trip, a you-should-be-listening-to-this-band essay. Compose some limericks, haikus, free-form poetry, 5-word stories. Document a particular bit of real person canon. Take some pictures. Draw a stick-figure comic. Create something. Leave a comment in this post saying you did it. Include a link to your post if you feel comfortable doing so.
This would be a good time to look through the Day 2 wish lists of participants to get ideas for fanworks you can create. And yes, it totally counts if you already created something to fulfill a wish for someone.
I made some icons of Matt Cohen for a challenge