Similar to the Collaboration of the week, but on a smaller scale, you might want to "adopt" an article. This would involve doing the research, writing, and picture-taking (if possible) for either a non-existent article or a stub. Of course, everyone else can still edit an adopted article, and you can work on other things too, but the idea is to find a focus for a while, to try and build up the number of quality articles the Project has produced.