One good idea for a teenage boy's birthday party is a sports-themed party at a place where various sports and activities are available to attendees. Another idea is to set up a casino night with fake money or chips and prizes to winners of specific games. A simple, but effective idea is to rent a small movie theater for a private showing of the latest blockbuster.
For a sports party, use invitations and party supplies with a sports theme. Consider having a paintball tournament at a local paintball park, or throw the party at a recreation center or country club that allows access to tennis, basketball, volleyball and racquetball courts, as well as a pool. Give favors such as team shirts or baseball hats. Serve food and beverages found at concession stands, such as pretzels, popcorn, hot dogs, nachos and lemonade.
For a casino night party, rent gaming tables and a roulette wheel. Use gift cards as prizes for tournament games. Set up a section of the venue for dancing and music, or add a movie or video gaming station. Create a photo section with the name of the casino and props for guests to take pictures. Give away favors such as casino chip keychains or fuzzy dice.