Voice Recorder/Player and Voice Brick Control

Imagine a world with voice controlled Lego bricks. The possibilities are endless. A couple ideas I have thought of are voice controlled lights. If you own a Lego set with a light brick, instead of pressing a button or pushing down a piece, just say "lights on". Another idea is a voice recorder. For example, imagine you own a Lego parrot set. You would press it's chest or beak and it would make parrot noises using an easily accessible and battery interchangeable voice recorder brick that you could change to the phrase or sound of your choosing.