Oak Leaf via Amazon offers the DecorNova 30-LED Battery-Operated Ball String Lights in Warm White for $8.99. Coupon code "JPQZG863" cuts it to $4.99. With free shipping for Prime members, that's $4 off and the lowest price we could find. They feature a remote control, adjustable brightness, eight modes, and IP44 waterproofing. Three AA batteries are required, but not included. Deal ends January 31.