Light bulb is a sting metaphor for new idea .. and ââ¬Åeurekaââ¬Â is a Strong verbal expression for finding and idea. So here are two light bulbs with their Smart and Typographical Filaments saying ââ¬ÅIdeaââ¬Â and ââ¬ÅEurekaââ¬Â . . . make a Smart choice for your Design