Ключевые слова: brainstorm, bright, bulb, cfl, collection, concept, creative, doodle, drawing, drawn, ecology, efficient, electric, electrical, electricity, electronics, energy, fluorescent, glass, glow, graphic, halogen, hand, icon, idea, illustration, innovation, insight, inspiration, invention, isolated, lamp, light, lightbulb, line, low, modern, outline, power, ray, save, saving, set, simple, sketch, solution, symbol, technology, thought, vector,