I don't even remember where I heard this one, but in reference to the plastic divider that one puts between orders at the grocery store to separate one person's groceries from another... I always now find myself referring to it as the "food fender". Never heard it yet from others, but to me it has an appealing ring to it.
(And now they've started putting advertising sleeves on the aforementioned "food fenders" at my local supermarket. I don't know whether to be disgusted at yet more advertising or admiring of the person who first thought of this!)