I recently bought myself a new keyboard, not the one I am about to tell you about, however. I bought a wireless mobile keyboard to use around the house with my Surface Pro. But if you're in the market for a full sized keyboard that you can wash, check this out.
The Logitech Washable Keyboard K310 can be immersed in water and scrubbed. It does require you to plug it and won't work wirelessly. But if you have a history of spilling drinks on your keyboard, this is better than quitting drinking. It's received excellent ratings and reviews on Amazon and costs just $32.
I can't wait for the wireless version.