Art Pieces Challenges at http://artpieceschallenges.blogspot.com/
(I don't know how to make this a link)
however they had Blog Hop which works like this.
The challenge is to make an ATC with the theme LOVE, this is the main theme of the ATC, but in every blog you visit, you will get another element that must be represented on the same ATC. All elements were - Love, Red, A heart, A button, Ribbon and Text.
My completed ATC "I LOVE CUTE"
I enjoyed just making "1" as sometimes you don't have the products to make "9"