It’ll rotate whatever you put into it. (Don’t delete the dynamic panel inside of it called _vars, though.) Could be useful for making radial sliders and such.
@SHall
Without changing the script?
Just add a big enough area (circle in the screenshot) at the back of the panel.
Arrange the object you want to rotate so that the anchor points to the center of the panel.
Add a panel with an empty action if you want to only allow dragging the object.