For $1 or less.
That sounds like something we would list here! Check out this great list of 10 ways to entertain young children for $1 or less (without the TV).
# Large cardboard boxes – Perfect for making houses and small castles. A large cardboard box can entertain an imaginative child for hours. Make sure you are nearby to take pictures and plenty of door knocking. Hint: look for an appliance store in your area. They often have many of the large boxes they are willing to give you as opposed to putting in the trash.