There seems to be some demand for a casual community activity.
How about weekly art challenges?
I wouldn't worry about the word 'challenge' too much though, this is a pretty casual thing and not in any way a contest or inherently competitive, unless you make it that way. If you don't end up doing it no big deal.
Simply read the challenge rules and submit them within the week before the next challenge is posted.
Submit any time during the week. You dont need to tell me in this thread you are participating. Just post em'. Or else if you say you're going to do it and don't, well then you're just gonna look silly aren't you.
If you think you have a great idea for a challenge feel free to let me know about it.
Got questions? Post them. Want help or advice? Post WIP's.