I have done a couple of small ones, they are so much fun to do.
the Stencil Co sells stencils for small or large whole cloths, and also the already marked ones, and they aren't too expensive.
http://quiltingstencils.com/index.aspx
Here is a picture of the 2 I have done, and also of a stencil for a small whole cloth. the stencil is a 161/2 in square.