Here are some fun options for you!
Our scarecrows are made of old jeans, old shirts and the head is made from an old pillow case. Using buttons. Sew on a face
Use yarn for hair and and ild beat up hat. Stuff the head with stuffing or hay. Sew it onto the shirt. Stuff the shirt. Sew the pants onto the shirt after stuffing. Place a long pole into the pants and hot glue into the pants and stuffing to make it srurdy. Hot glue straw out of the arms (for hands) and out the legs of the jeans. Put the pole in the ground and a scare crow is born!
Here is another idea for you https://www.thebudgetdecorator.com/diy-decor-how-to-make-a-scarecrow/
Great idea - purchase the clothes at Goodwill!