Ed's Key

Ed's Key is an item seen in the episode "Key To My Ed". Edd found the key and suggested the Eds should try and find what it opened and return it to its owner. They even held it for ransom. Ed eventually realized that he had a key in his pocket and that it fell out of his pants. The key opens his back door.

Things it was thought to have opened

 * Jimmy's retainer
 * A Cow's udder
 * A manhole cover
 * A Fire Hydrant
 * Rolf's Accordion Case