I freaking love Gummy. Let there be no pretense that he is absolutely one of my favorite secondary characters on MLP.
Making him life-size or at least roughly how large he would appear to be on the show (lots of fake mathematics and what-if scenarios involved) made for a fairly quick and fairly accurate plushie.
Gummy measures 12" long and 6" wide from foot to foot.
Here is a link to his Etsy listing: [link]