Answer:
What comes one time in today, three times in tomorrow and never in the future?
What always comes into the house through the keyhole?
Some adults still use these to count.
Four kings of whom I am one lord. Often on deck but never on board. Though I have a large heart, I am always seen at war. During which I always wear a suit, but never a suit of armor. Who or what am I?
What is at the end of a rainbow?
It is something you will never see again.