Illco released a set of Sesame Street character plastic wind-up toys from 1988 to 1992.
Wind Up Walking Oscar the Grouch (1988)
Wind Up Ernie the Drummer (1989)
Wind Up Toddler Crawling Ernie and Bert (1990)
Wind Up Big Bird Rowboat (1992)
Wind Up Ernie's Scooter (1992)