A fun game of accuracy and hand-eye coordination that you can play indoors.
Open a man's felt hat wide and place it about six feet away from where you are sitting on standing.
Take a pack of playing cards in your hand and try to flip, throw or pitch the cards in to the hat, one at a time. Score one for each cards that lands in the hat.
It will come hard at first, but after a whiles, you'll get the knack. After you have practiced and become proficient, you can challenged your friends (or Dad) to a game.