Take time before the session and find a quiet place for reflection. Imagine the inside of your facility, or find a quiet time when you can explore it by yourself. In your mind's eye or in real time, walk quietly through the halls, stopping by interesting things. Pause in the sanctuary, if you are able, and absorb the feel of the place. In other religions, there are ways to define sacred space, such as a mezuzah on the door in Jewish tradition, or holy water at the entrance to the worship space in a Catholic church. What defines our sacred space? Bring your sense of sacred space into the tour for the preschoolers by acting reverently and quietly and encouraging them to do so as well.