Sometimes I like to just stop in the middle of splashing ink and paint around and see if I can get some extra mileage out of what I'm doing. The page directly above started life as the right hand side of the spread in the top picture and when it got to this stage I put it into the computer so that I could play some more with it.
I like it as a potential background for other pieces just as it is, so now I have it in my picture files I can print it out whenever I want. I will probably also use Photoshop on it and it'll end up with a whole range of different looks by the time I'm done.
This is what I did with the eggs here. On the left is my original photograph of a stamped book page and opposite is how it looks after being manipulated a little. You don't always have to create brand new images and backgrounds - it can be fun to do a little recycling and reusing of what you already have!