How about “Rain”, based on the rain slicked look of the brick built roads we’ve done:
* How do we depict it?
* How do we depict figs reacting to it?
* What things happen primarily or only in the rain?
* What is rain famous for?
Or perhaps expand on this. Pick a weather condition. It’s a heat wave. Or it’s windy. Or it’s an ice storm. Weather happens every day, but few builds incorporate it. That might be an eye opening challenge.
