I tend to communicate using "brain size" analogies.
This one doesn't work as a static image, but works moderately well in an animated presentation (first see the example, then show the number).
E.g.: GPT-4 has about 2 trillion parameters, and a mouse has about 2 trillion synapses. These two things are quite analogous, as AI models are modelled after neurons and synapses.
However, this brain size thing lacks an "intuitive" visual scale. I like the circles with surface area.