We each made our own Sesame Street costume.
Oscar: Hot glued moss (from any craft store) to my shirt, shoes and a visor. I also hot glued a fuzzy eye brow and large googley eyes. I made the trash can and trash can top out of foam board, spray paint and duct tape.
Big Bird: Glued yellow boas onto a button down shirt and skirt. Created the hands out of felt and stuffing and cut holes in the bottom so you can use your hands. Shoes were also made of felt and stuffing. Covered a hat in feathers and made a nose out of felt. Bought orange tights and made pink circles to put over the tights.
Cookie Monster: Buy fuzzy material, spray paint. Blue tights and use the same material for the shoes and headpiece. Cut out cookies and place anywhere you see fit!