Super Mario Bros. Sound Blocks Annoy Your Office Mates to No End - Gizmodo
http://gizmodo.com/gadgets/gadgets/super-mario-bros-sound-blocks-annoy-your-office-mates-to-no-end-244127.php
"Super Mario Bros. Sound Blocks just sit there on your desk until you press down on their heads, and then four different familiar and authentic sound effects emanate from within."