After hearing horror stories from so many friends who have spilled coffee across their laptops resulting in absolute ruin, I began to look into ways to protect her from me. This is certainly absolutely fool or klutz-proof, but it is something. It protects your keys and it lays in one solid piece across the keyboard which could also serve as a buffer from spills.
I got mine at www.ifuncity.com $8.49. Free shipping.
It is quite thin and doesn't interfere with typing and can quickly be removed if you are going to be working awhile and want to type without it. It comes in fun colors. I got the red one. It is a cheap investment that could save you thousands and just overall wear on your keys.