Drinks with little Japanese style paper Parasols in them.

Just Kidding ...

Banana Plants, Palmettos, Heliconias, Jade Vines and perhaps ... a couple Australian Tree Ferns and something a bit larger in the background like a Delonix Regia or a huge Ficus ( Of course, this part depends upon how much space you have around your central focal point ). Get some Barbara Karst Bougainvillae and let them fight for space with the Jade Vines and Heliconias.

Consider also, screens of medium height clumping bamboo that can tolerate the weather in your part of the country and show color variance, especially red if you can find such a variety that will thrive in your area.

Myself, I would put in a Koi pond with a little revolving paddle wheel in a stream that eventually recycles the water back to the pond. Around this I would build a mini putter golf course with brightly colored obstacles, etc.

But don't build that thatched roof outhouse. Think of something else.