Oak Leaf via Amazon offers the Oak Leaf 30-LED 13-Foot Solar Rubber Globe Outdoor String Lights 2-Pack in Warm White for $15.99. Coupon code "CYBC456A" cuts that to $8.99. Plus, Prime members bag free shipping. That's a buck below our mention from a month ago, $41 off list, and the lowest price we've seen. These solar-powered lights feature steady-on and twinkle modes and glow for up to 17 hours on a full charge.