Amazon offers Prime members the Tomshoo 12-LED Solar / USB Chargeable Camping Light for $11.99. Coupon code "MLF36VDK" cuts it to $9.59 with free shipping. That's $7 off list and the lowest price we could find. It can be charged via solar or over USB and features three brightness levels, hanging hook, and built-in 1,400mAh battery for charging USB devices.