Grow your own Coffee, will take approx 4 years for first harvest. It is actually very easy to grow, indoors. This is surely worth a try for something different.
The Dwarf Cavendish Banana makes a good container specimen if given careful attention. Banana plants are extremely decorative, ranking next to palm trees for the tropical feeling they lend to the landscape.
Coffea Arabica is easy to grow indoors, makes a very attractive houseplant and if it likes you well enough, it will even rewards you with flowers and berries!