“Oh, neat.” Thus spoke Nicholas Deleon when he saw these MacBook keyboard decals, and it was Good.
So yeah, it’s a vinyl decal that you affix to your MacBook keyboard to give it a little bit of personality. At some point it became fashionable to put stickers all over the back of your laptop, so I don’t see why it wouldn’t be just as fashionable to have fancy keyboards.
There’s several designs, so maybe you’ll find something that matches your good humor? Humor in the Ancient Greek sense, of course.