In "Traffic Cam Caper", Candace tries to use a traffic camera to expose her brothers, but Perry tries to eliminate the very same tape to preserve his identity. In "Bowl-R-Rama Drama", Phineas and Ferb build the world's biggest bowling ball and pins.
In "Put That Putter Away", Candace is sick and so sends Stacy to bust her brothers when they create the world's ultimate miniature golf course. In "Does This Duckbill Make Me Look Fat?", the boys construct a teleporting device, which causes Candace and Perry to switch brains.
In "Out of Toon", the boys and their friends create a cartoon and cast themselves in it as superheroes and Candace as the antagonist. In "Hail Doofania", when Doofenshmirtz's brother Roger is elected mayor, he retaliates by building his own country.