Answer:
War fought with pieces on a board.
What is filled with air and sometimes a gas, tied to a string and often seen on your birthday?
Even if you throw it away, it still comes back.
Touch this and you'll regret it. But if it's cold, you won't forget it. What is it?
Usually green but can be brown. It's a great place to play or lie down. What is it?
What is big and yellow and comes in the morning, to brighten mom's day?