Toysmith Tech Gear Multi Voice Changer (6.5-Inch Various Colors) Price:  $16.99 (as of 25/12/2019 07:07 PST- Details)

Experiment with the science of sound using this electronic voice synthesizer, featuring 10 different voice modifiers.
Side levers adjust frequency and amplitude, creating hundreds of different sound combinations.
Effects include a voice amplifier and colorful flashing LEDs.