Hehkulamppu vaaleanpunainen tausta, voidaan käyttää ideana tai energian käsite - Kuvapankin valokuva ja kuva

One yellow pencil and a light bulb above it

Crumpled paper on a white background

On the pink sheet is painted a lamp as a symbol of ideas and insight. White background, design element.

Boy near a white board with a painted light bulb, a clever schoolboy, good idea came to the child near the blackboard

Waste paper and pen on light bulb