Amazon.com: Brainstream 60s BeepEgg, Singing and Floating Egg Timer for Boiling Perfect Soft, Medium or Hard Eggs, Plays 3 Melodies for 3 Degree of Hardness, A005388 : Home & Kitchen
Amazon.com: Teacher Timers, 3.8-inch Large Digital Classroom Timer for Kids, LED Magnetic Countdown timers with Constant Bright Function, Silent Timer for Students and Teachers : Home & Kitchen