When my son was little we dressed him up as a pumpkin. I got some orange material, black felt (for eyes,n nose, and mouth), a green hat for the stem. I sewed the back seam. Put elastic around the top and bottom and cut slits for his arms.Then cut out eyes, nose and mouth and glued tem on.
He wore a heavy orange sweatshirt He was only 18 months at the time so I put some padding underneath to help keep him warm. My 5 and 7 year old daughters came up with this idea. He was so cute.