Depends how high it is - we put a bird table on one of ours that was about 5 ft high, that way the birds could still enjoy it. Or maybe it's chair or table height? You could put a seat or table top on top of it and use it as a piece of garden furniture.
I think flowers are good. What kind of flowers or climbing plant. I need plants that grow back each year because I am about to start clinical for a radiology program and I won't have time to plant next spring.