REI offers the Seattle Sports SurviVolts Power Bank and USB Mult-E-Tools 5-Pack for $38.93. Opt for in-store pickup to dodge the $5.99 shipping fee. That's the lowest price we could find by $21. It features a 150 lumens flashlight, electronic plasma fire starter, 5-milliwatt long-distance laser beam, and a 5,000mAh power bank.