Ethiopia has maintained its independence going back to ancient times. They were able to resist Italy over and over and avoided being colonized.
As a result, there are so many things that Ethiopia just does in its own unique way, from coffee to the alphabet to Christianity.
One of my favorite uniquely Ethiopian things, though, has to be the calendar. Ethiopians are living in 2016 right now. Their calendar has an extra mini-month, and it runs a few years behind the Gregorian calendar mostly used elsewhere.