We have never done a dinner prayer. But as my daughter, now 3 1/2, began speaking, we decided to start a tradition of holding hands and each talking about something we are thankful for. My wife and I try to steer at least some of it to our food. Yesterday it was fresh arugula from the garden (first harvest of the year). Often it is for the wild salmon or beef from the wild range 1/2 cow in the freezer. My daughter usually gets it.