LED_tunnel_noisebox.jpg
From the MAKE Flickr pool

Member Makaaberi built this interesting box o’ sound and vision –

This has a wee noise generating circuit coupled with a led blinker to act as a vco, built inside a cheap led-light tunnel. Makes many funny noises greatly annoying my beloved wife. ^^

It’s true, the wives seldom love noisey waves of DIY. *sigh* –Link

In the Maker Store:
Noise Toy Kit
Loud Objects Noise Toy Kit –Link