DecornovaDirect via Amazon offers its DecorNova 13-Foot 20-LED Dragonfly Solar-Powered String Lights in Multi-color for $8.99. Coupon code "ZWIRH2JL" drops that to $4. Plus, Prime members bag free shipping. That's $2 under our mention from three weeks ago and the lowest price we've seen. (It's also $4 below the best deal we could find for a similar string elsewhere.) These waterproof lights illuminate automatically at night for at least 17 hours after a full day of charging. They feature steady-on and twinkle lighting modes. Deal ends December 31.