Great points, Hikermor. We put fresh batteries in his headlamp at start of every excurision so he should be in good shape if he doesn't lose it. He also has a second one that he keeps in his pocket and wears on night hikes. Those both use the same AAAs. The LED glowstick uses different batteries. It's new so we're still learning it.

He likes chem lights and since they're light and take up little room I didn't discourage him. Ditto the crank light. He keeps one in his bed and really likes them.

At 8, the dark can be a scarey place. Extra batteries is a great idea! I always carry some for him but maybe it's time that he do that too.