Some eschatological scenarios hold that darkness will envelop the earth during the end times.
So it's important to make sure that you're able to see, whether you're hunkered down in your bunker or attempting to traverse a post-apocalyptic terrain. Glow sticks can help light up your life, literally.
Fortunately, Fire Supply Depot hawks packs of 50 green light sticks that glow up to 12 hours each. If you decide to buy multiple packs, you could save up to 20%.