Dessin d'une ampoule sur le papier - Photo & image de stock

Lightbulb on wooden desk background. Brainstorming concept.

Waste paper and pen on light bulb

Hand writing light bulb on yellow paper on brown background -business concept idea and strategy

One yellow pencil and a light bulb above it

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