Ключевые слова: back to school, black background, blue, bright, bulb, business, concept, conceptual, copy space, creative, dark, economical, economy, education, electric, electrical, electricity, energy, equipment, festoon, festoon lights, flat lay, garland, glowing, good idea, idea, illuminated, innovation, invention, lamp, leadership, learning, light bulb, lightbulb, luminosity, saving, shine, shiny, sign, symbol, technology, think big, think different, top view, unique, watts,