'God Talk' in my preschool sound a lot like discussions that might be taking place in university classrooms. Young children are occupied with the same questions that some adults might have.
Over the years I learned that the best response I can give is:
I collected some of my favorite answers from our class 'God Talk' to share with you:
This next answer came from Lauren, a bright 5 year old. "If you said that when G-d created the world he became a part of everything, then we can see G-d because I can see this chair and this table so I can draw G-d." I like her logic.
Here is what Daniel said: "Maybe there was a button and something fell on the button and created G-d." Great thinker except another little boy contradicted him and said: "But the button couldn't be there if G-d didn't create it yet."
"G-d was just always there."
"G-d was made because of his heart." - This little girl is sensitive, loving, and caring. A real gentle soul who, I believe, interprets G-d as the emotion of love and compassion.
"Who Painted the sky?" - Eytan asked me on the way to school one day. "What do you think?" I asked back. This was his answer: "I think that G-d painted it because he wanted us to see beautiful."
My son is extremely curious about outer space, especially what comes after outer space. After thinking about it for weeks he concluded that G-d comes after outer space.