Ключевые слова: alternative, brainstorm, concepts, conceptual, creativity, cutout, echo, ecological, economy, electricity, environmental, festive, friendly, generation, genius, idea, illuminate, illuminated, illumination, image, imagination, innovation, inspiration, intelligence, invention, lamp, lightbulb, power, ribbon, save, saving, science, shine, shiny, shot, solution, think, thinking, tube, utility, valentine,