if you are looking for children's patterns, print free coloring books and transfer.
Here is one site for free quilting stencils. Scroll ALL the way to the bottom of the page.
http://www.reannalilydesigns.com/RDthepatterns.htm
idea I picked up from the Simplicity website is to use Press and Seal to "transfer" your pattern to your quilt top. Just draw the pattern onto the non-sticky side and stick the other side to the quilt top. Stitch over the lines and pull the product away when you are done.