At the heart of a deep bond lies an experience.
I heard a story of a man who ran a manufacturing company that used giving as a way to engage his employees. He grouped his employees into teams of about five. He gave them each a few thousand dollars and a mission to collaboratively choose a worthy cause and raise as much money as they could for their charity of choice. The few thousand dollars was used as seed money.
The experiences that were created from this mission tightened his team and led to a stronger workforce and brand.