Ключевые слова: background, brainstorm, bright, bulb, business, concept, creative, education, efficient, energy, eureka, flat, genius, graphic, halogen, idea, imagination, incandescent, innovation, inspiration, intelligent, invention, knowledge, lamp, learning, light, lightbulb, line, motivational, opportunity, power, science, sign, solution, stroke, success, symbol, technology, think, tips,