Because of what he's leaning against, one also can't help but think of those old drunk-on-the-lamp-post ornaments! His loosey-goosey hands give him a devil-may-care look (you can make the hands from raffia or corn husks).
The picture above shows an example of how scarecrow faces can be made of burlap. Burlap is an alternative to cloth for scarecrow faces. It's a traditional material for scarecrow faces and a fitting one, since burlap is associated with gardening (think burlap potato bags or plants that have been balled and burlapped for transportation).
Burlap is an excellent material for scarecrow faces when you seek a rustic look. The Scarecrow in The Wizard of Oz (1939), who is often used as a model for such figures, sports of burlap face.
In the next picture we'll see another example of a burlap face -- but one used in a design that is anything but traditional....