I found this site where you can actually adopt an olive tree.
Jason Gibb and Cathy Rogers set up Nudo in 2005 after buying and restoring an abandoned 21 acre olive grove in Italy’s Le Marche. They gave up successful careers as TV producers to build a business in the Italian countryside, following a hunch that they’d enjoy being olive farmers. So it was that they found themselves heading off to live in Italy, with little more than their one year old daughter, a pair of secateurs and an Italian dictionary.