Here is one version. For ELA, the students described their scarecrow using shape and color words.
Here is an example from another class...
Here are a few other scarecrow ideas that you could turn into shape lessons....
I am sorry, but I do not remember where I found all of these ideas. If you see one that is yours, post a comment and let us know :)
The art teacher at my school did these with all of the kindergarten students.
I did these scarecrows with my class several years ago. They came from TLC Lessons.
These scarecrows were made by a teammate a few years ago. They came from makinglearningfun.com