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!
Excellent fresh cut and they can also be easily dried and will make choice Winter arrangements. It can spread quickly, plant where it can be controlled.
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.