there is one in this book.
http://www.martingale-pub.com/store/...oducts_id=1157
and some fun stuff here that you could get creative with.. :D
http://www.google.com/search?q=moose...ce=lnt&tbs=itp:clipart&sa=X&ei=U131Tf7pJ8ygtwe4zZT7BA&ved=0CCQQpwUoAw