Use a MacBook Air as a cutting board
I wouldn’t recommend this, but someone was crazy enough to apply a Zagg shield to their MacBook Air, and then use it as a cutting board to chop some peppers and a tomato with a large knife. I guess this is supposed to demonstrate how effective the Zagg shields are at protecting the MacBook Air, which it does, but it also just looks slightly crazy.
Video of this below, it should start at 5 minutes 10 seconds in, if not skip ahead to see the cutting board action:
I don’t know if a Zagg shield is necessary on the aluminum MacBook’s, but I did have one on my iPhone before I got an tough rubber case and it did the job to prevent scratches. They’re probably a good idea if you plan on using your iPad for cat games too.