Play with your spouse to try to connect all the dots below using four straight lines without lifting your pen off the paper.
Try it yourself.
Solution: Begin at the bottom right hand corner and draw a diagonal line to the top left corner. Without lifting your pen, draw a straight line down, connecting the dots on the left side. Extend past the last dot though. Think outside of the box! Then draw another diagonal line extending past the top right corner. One more line to the top left corner and you did it!