Over at Linnecards, we had an Inspiration Relay Challenge. That means person #1 makes a layout and emails it to person #2. Then person #2 uses that layout as inspiration (design, color, embellishments, whatever) and makes her own layout. Repeat for person #3, #4, and so on. No one sees all the layouts together until we're done. Here's mine. I had been looking for a chance to scrap this photo and the challenge came just at the right time.
You can see all the layouts (in reverse order) here. This was great fun and easy too. You could easily set this up among a group of scrapping friends. You don't have to be on the same message board; you could do it all by e-mail.