Doodle Backs by Clever Monkey Graphics is a set of 4 groupings of doodles. Each has a little bit different emphasis on what it is composed of. 

Using Doodle Backs: 

Straight edge doodles are great at the edges of your layouts or perhaps more central in the layout under a cluster. They add a great whimsical touch. 

The circle doodle is great partly exposed under photos, placed on it's own round papers for a mixed media look, and even used more than once on a page. 

The doodle with rounded ends that goes in in the middle can be used similarly to the others. 

All the doodles can be great as an added texture to a page. Don't be afraid to clip papers to your doodles, fill them with different colors or gradients, or add shadows if you need. Painting color onto just a few of the doodles within can be a great look as can filled with color just a few of the doodles. I've watch CT's create with them and kept seeing more and more ideas for use - check out the beginning sample layouts above.