Apparently the codes on the top of the Prairie Farms caps can be redeemed for up to $5,000 per calendar year toward a registered 501(c)(3) organization. Here's the info:
Info Site: http://www.prairiefarms.com/our-caps-your-cause.aspx
Rules: http://www.prairiefarms.com/press_releases_PDF/OCYC%20Official%20Rules-5...
Application: http://www.prairiefarms.com/OurCapsYourCause_Application_8-13.pdf