It took me some time to figure out how to make it. King has a pattern for a hexagonal heater where she glues the fan bits onto card. I tried, and it wasn't neat, and also I wanted to keep the lattice transparent. Finally, I simply stuck it together with tape. The fourth corner was hard! The top is of course a button.
While I was at it, I improved my old fan palm (sorry, unintended pun) that now goes better with the pedestal.