To decorate a table with lights, begin by choosing lights that complement the existing decor, such as string lights, tea lights, or candles. To place the lights around, choose a table centrepiece, such as a vase of flowers or a decorative item. Consider using lights of varying heights and sizes to add depth and texture to the arrangement. Finally, when using candles or open flames, use the lights to create a warm and inviting ambiance while also taking proper safety precautions.