We have bought these for our future CI teardrop.
camco 42655 camper lights
They are cool string lights shaped in little Teardrop camper shapes, multi colored. You can find them at Walmart and Amazon. They are 110v so you need Shore Power or use with inverter when on DC power. Package says not to string more than 3 strings together, but that should be plenty for a 12x12 easy-up canopy.