Although the early spring flowers are beautiful and the fruit is attractive, the Pyrus communis is normally grown only for its fruit crop and not as an ornamental.
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!
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.