Here is my follow up to the Mario Mech. I originally was thinking I was going to put Yoshi on the top of the nose, but it seemed to fit better in the nose. After doing this custom, I now wonder how Yoshi sees over that big nose of his. I guess that is cartoon physics for you.
I used a 10" Yoshi Vinyl I got at Walmart, and I used a Yoshi figure I got off of eBay. I actually have quite a few Yoshi figures, but they were either too big, or too small. To see more picture go to My Flickr Page.