Big brainstorm on outdoor garden statue
You could, alternatively, choose to turn it into a fairy land of giants, dragons, unicorns, and other creatures from out of the pages of myth and legend. Or you could fill it with figures of historic personages. If you fancy figures depicting abstract art, you can get those too. Your imagination is the only limit, there are all sorts ready and available for you. If you do not fancy going for anything quite so grandiose, think about putting up a simple gnome or dwarf.