Although the prices for sporting events have spiraled out of control in most venues, you can still get fair deals in the "nosebleed" sections. Sure, you might not be close to the action, but you're far enough away to see the action on all parts of the field.
Just because this is the Electronic Age doesn't mean you can't go "old school" with the entertainment. A pack of cards or a board game can mean hours of fun if you stock up on the snack foods and invite over a few friends. It doesn't have to cost much.