In your own space, create your own challenge. What's something you want to see more people doing in fandom? Is there something fun you've tried that you think people would enjoy if they gave it a go? Dare your friends to try it out, and have fun with it. Leave a comment in this post saying you did it.
In the last year, I've gotten quite a bit of anon hate (and some of you have listened to my meta about it) and it's always made me feel really crummy. I can count on one hand how many anon love messages I've gotten. So my challenge would be to go to as many tumblrs, journals, fanworks as you can and leave an anonymous love message/comment. Don't do it for credit, points, to complete the challenge. Do it for the satisfaction you'll get from making someone's day. Do it because you know what it's like to get an anonymous message from someone telling you how much your work means to them. Pay them a compliment because you WANT to, because you're compelled to. Do it for the sheer joy of others, and not for any recognition of your own. Don't even check in to say you did it. Just, do it. And hopefully you'll get some anonymous love too.
Let's rid fandom of anon hate, by overloading it with anon love.
And that's all I've got.