Well.. this is not exactly a question but more of a suggestion. Still i would like to share it.
Years back, when my girl was young, I thought of training her on how to use money in a store. I explained to her that everything there has a price and we were to use money to pay for anything that we want.
I thought that my then three year old, would have understood but later that night; as i was counting the leftover money money that was left in my purse, she was watching me closely and noticed my frown. When she asked me what was the matter, i did not think before answering her, "We do not have enough money."
She said to me, "Why don't we buy money?"