Amazon.com: Force1 Ditto Smart Mini Voice Changer Robot Toy for Kids - Talking Mini Robot Voice Recorder Desk Toy with LED Eyes, Posable Flexible Metal Body, and 3 Learning Toy Robot Batteries (
TONKBEEY Voice-boy / Girl / Robot Voice Changer Microphone for Kids | Megaphone Function - Walmart.com
How to Make a Robot Voice from Text/Recording
Roboto - Robot Voice Changing Eurorack Module from Synthrotek on Tindie