Ask friends for parts and build the Gifting Tree in FarmVille. The new FarmVille is a new buildable decoration where you can upgrade it up to several stages. It can also be harvested daily for Mystery Sapling on which in turn may transform into a wonderful rare trees. The more upgrade a player made to this structure the more chances of getting rarer items. Expect this feature to be rolled out soon.
Gifting Tree Stages: