I think I remember an appliquéd one by Morelcabin creations (I think she is a member here? Tammy maybe? ) When I went searching I did see a few on pinterest, but I'm not a member there so can't see the source. I did find a pieced grand piano mug rug, so thought I would give you the link..... over 150 pieces, yowzers!
http://sarahlynnsmiteredcorner.blogs...ug-rug_25.html