CyberPower CPS160PBURC1 RoadTrip 160 Power Inverter for $29.99. Order online for in-store pickup at Best Buy to lock in the price and save on shipping. Otherwise, shipping is free on orders over $35. Here is a screenshot for reference. It has 160-watt peak power, pivoting DC plug, and one 5V 2.1-amp USB port & household power outlet.