Designer Nolan Herbut made a bench out of keyboard keys:

The Wolfgang keyboard bench is made up of 2000 keys imbedded into a layered Baltic birch wood. Each key is pressable and actually makes a clicking sound when pressed. The tactile effect of the bench also makes a playful interaction with the bench because you engage with the piece of furniture in a very up close and intimate manner while pressing in the keys.

This way you can get the sensation of sitting on a keyboard without damaging your computer peripherals.

Link via DudeCraft | Photo: Coroflot