Treehouse? Challenges?

I have my yuletide reveal plus gifts post about half-coded. I am going to squee about all of my gifts even if it takes until October. Also, I keep getting home from work and planning to draw but sleeping instead. But it feels so good.

ON THAT ENERGETIC NOTE. Are there people interested in more Treehouse? (See tag). Which fandoms? Is there someplace else I should ask about this? Are there changes you'd like to see to the format? Or possibly, please just go back to drawing cute stuff without stories, please?

And are there any neat challenges I should know about? Pimp me into your fandom, please.