The document provides tips and ideas for low-cost teen programs that can be run by libraries for under $100. It suggests several program ideas like altered books, murder mysteries, and candy sushi that have been shared by librarians. It then asks readers to come up with their own event idea that uses $25 towards snacks, materials, or other costs. Readers are encouraged to share their ideas on the author's website to help plan teen programming events. Contact information and additional resources are also provided.