Take a section on a website
and turn it into a week-long feature. For example, "Bugs and feature requests" and turn it into a feature called "How would you make this website better?" and run it for a 7 days.
( sandettie light vessel automatic New Twitter - @bollocksreally, Mon 24 May 2010, 17:32, 3 replies, latest was 15 years ago)

I see what you did there
Like: what image comp do you want to see?
(CactusZack Shaved his coin purse on, Wed 26 May 2010, 4:39, Reply)

Or
"What's the best thing you've seen on the internet outside of this website recently?"
(StapMyVitals wouldn't mind a bit of that, Wed 26 May 2010, 17:49, Reply)

and even
"How would you start a chat with other users on this site?"
( sandettie light vessel automatic New Twitter - @bollocksreally, Thu 27 May 2010, 13:34, Reply)