Environment cartoons: Energy efficient lightbulbs as a metaphor for good ideas

Environment cartoon. Energy efficient lightbulb as a metaphor for a good environmental idea

Environmental cartoons
Sustainable energy cartoon
Energy efficient lightbulb cartoon

A thought bubble containing a tungsten lightbulb to symbolise an idea, alongside a thought bubble containing an energy efficient lightbulb to symbolise an environmentally friendly idea
A cartoon to illustrate thinking about the environment

A lightbulb turning on in someone’s head as a metaphor for an idea
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