You can find at your farm but also at your neighbours farm a treasure chest. The
treasure chest dissapear every 6 hours at your land. The first chest is for free, the second wil cost you 6 diamonds to open it. You can find materials, or fun points, or energy, or coins. Materials you can get are materials for buying workers hut, expanding your land, expanding your storage buildings, materials to chop your dried trees and bushes.