I love crazy little things ... and here's one of them: Wreck This Journal. It looks like a fun thing to do when I am having a creative block -or- just to help me loosen up with my art.
There are a few Flicker groups documenting others' progress through this book.
Here is the largest group: http://www.flickr.com/groups/how_to_wreck_a_journal/
I am trying (very hard) not to look at the photos so that I won't be influenced by what other folks have done, but I must admit ... I occasionally sneak a peek or two & find it fascinating to see the different takes on each concept.
I think I will branch off this blog into a journal blog, to document my journey of destruction: http://cherylsjournals.blogspot.com/