September means packed lunches—endless days of uninspired sandwiches stretching into the future. Here’s an idea to change things up a bit. This lunchtime treat will have to be made, or the rice cooked at least, the evening before (unless you’re an early riser) but it will be well worth the time and effort to have something delicious waiting for you when the noon hour bell rings. Just wrap the sushi rolls tightly in plastic wrap and refrigerate to keep them fresh.