Coloring In books are a great source of patterns, you can also google and get free coloring in sheets. My favorite patterns for applique seem to be for children and the two that appeal to me are MoonShine
http://www.moonshine-designs.com and Kids Quilts
http://www.kidsquilts.com for more mature patterns I like smee designs
http://www.smeedesigns.com Moonshine and Smee are Australian Companies and Kids Quilts is a New Zealand Company.
Almost forgot my local lady Heather's Designs on Kangaroo Island
http://www.bay-window.com.au or
http://patchworkdesign.co