Something I often buy after a food shop to mom on the way home is Vbites sage and onion slices. Word of advice, if you're driving, make sure you open the packet with your car keys BEFORE you set off, as you just won't get to open them otherwise.
Oh, and on my little trip today I stopped for drive through coffee! Some new fancy pants blend they had made into a soy cappuccino. Coffee is essential for road trips.