After it gets dark, you can sit around the fire and tell stories. This activity was a lot of fun for my family and cost a lot less than if I would have gotten a camping site. The only money I spent on this activity was on the food and my family would have eaten dinner that night, so this was a pretty frugal activity for us. Here's a list of some items you may need for a Campfire Night.
Hershey’s Chocolate Bars
Hot Dog Buns
Mustard, Ketchup, other condiments
Charcoal, wood, etc (Things to start your fire with)