Phineas and Ferb Koosh Ball Set - 3 Pc Bundle with Phineas Ferb Agent P Koosh Toy Balls with Stickers | Phineas and Ferb Party Favors for Kids Toddlers. Our fun Koosh character balls feature Phineas, Ferb, and Agent P. Collect them all! Gift this to the Phineas and Ferb fan in your life. These Phineas and Ferb Koosh balls are easy to hold and throw. These Koosh balls are named after the sound they made when they land. Use these Phineas and Ferb Koosh balls as Phineas and Ferb party favors, party supplies, and birthday goodie bag fillers. Officially licensed Phineas and Ferb Koosh balls. Comes with bonus Minions travel sticker book.