Dewey at The Hidden Side of a Leaf has come up with a blogging challenge called Weekly Geeks that sounds like a lot of fun. I've signed up already. The first "theme" started yesterday. Go here to check it out.
Here are the basics from his site.
1. Every week there’ll be a different theme. One week might be “catch up on your library books” week and the next might be “redecorate your blog week” or “organize your challenges” week or “catch up on your reviews” week. It’ll be fairly bookblogcentric, but not exclusively.
2. Everyone who joins agrees that they will try to check each week to see what the theme is, although they DO NOT have to participate each week, only when they feel like it.
3. Everyone who joins is welcome (encouraged, begged!) to send me ideas for weekly themes via email, comments, whatever. The more ideas, the better.
4. I will post the weekly theme each Saturday, but you can check in any time it’s convenient to find out what the theme is.
5. If you post about your progress with that week’s theme in your blog (whether you were wildly successful or didn’t get around to any of it) then you can come back and leave a link to that post in the comments for that theme.
6. The next week, when I announce the new theme, I will also post a mini-carnival-like blurb, with links to everyone’s progress posts. Either way, you’ll have a link to your blog every week you participate, which will hopefully help other participants find their way to your posts.
7. In order to motivate participants to spread the word, anyone who posts promoting this challenge is guaranteed to be able to choose the theme for one of the weeks this year (their choice of week, first come first served). No need to pick a week now; just let me know when you have a theme idea and you can pick your week then. In addition, each participant who writes a promotional post by the end of April will have their name entered in a drawing for this chocolate monkey. If any of your readers sign up and leave a comment saying they heard about it from you, you get two entries for the chocolate monkey. You may never again have the chance to say to your friends and family, “Yeah, the internet gave me this chocolate monkey.”