Ключевые слова: activity, brain, bright, bulb, clipart, concept, creative, design, efficient, electric, electrical, electricity, energy, energysaving, equipment, flat, glass, graphic, human, icon, idea, illuminate, illuminated, illumination, illustration, image, incandescent, innovation, innovative, inspiration, invention, lamp, light, lightbulb, luminosity, mind, organ, power, saving, simple, solution, storm, storming, symbol, technology, think,