Apples: sliced with a rubber band. Bananas: whole, on top.

Apples stay white if you slice them and keep the pieces pressed together; bananas stay fresh if you don’t cut them at all.

The classic trick for apple slices is lemon juice, and it works — the citric acid slows the oxidation. But it leaves a tang not every kid loves. The better lunchbox hack: slice the apple, press it back into its original shape, and wrap a rubber band around it. Very little air reaches the cut surfaces, so the apple stays white for hours. When your kid opens it at lunch, it’s already in slices and still crisp.

If you’re pre-slicing into a container, toss the pieces with a splash of pineapple or orange juice instead — milder taste, same effect. Salt water works too, but then you have to rinse them, and that’s extra steps you don’t need at 7 a.m.

Bananas are different. Sliced banana browns no matter what, because you can’t stop that without changing the flavor. So just don’t slice it. Pack the banana whole and put it on top of the lunchbox, not under a sandwich. If rough handling is the issue, a hard plastic banana guard is genuinely worth it.

The peel is the best lunch container ever invented. Don’t fight it.