Super Glow-in-the-Dark Glowmark Arrows Stay Lit For 48 Hours

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Monty Burns has succeeded in blocking out the sun, and you're trapped in Forks, WA with the vampires of Twilight. How do you escape? Luckily, these apocalypse-ready Glowmark Arrow signs self-illuminate without any power for 48 hours to help point you out of town.

With only eight minutes under the sun or other artificial light, Glowmark Arrows emergency signs stay lit for two days straight and can be reused for up to 10 years. That's some crazy glow-in-the-dark action for these otherwise nondescript non-toxic (and non-radioactive) arrow signs. At $7.50 a piece, hotels and other facilities use them in place of electric emergency lights, but if you ever think you're about to deal with more than 12 hours of sunlight-free existence, and your best friend is a "vegetarian" vampire, you might just want to stock up. [Glowmark via GizMag]