Every time our buzzer rings we practically jump out of our skin. We'd compare it to playing Operation, minus the little tweezers and any of the fun. Wouldn't it be nice to toast your guest's arrival instead?
That's the thought behind Peter van der Jagt's Bottom's Up Doorbell, from Droog Design. A hammer hits the two glasses, creating a "clinking" ripple between them... which sounds much more appealing to us than a taser-like buzzing sound.