Bayer FREE Aspirin Pill Holder Keychain February 1, 2010 This post may contain a link to an affiliate. See my disclosure policy for more information. Become a fan of Bayer on Facebook, and you’ll be able to register to receive a FREE Bayer Aspirin pill holder keychain! Offer expires December 31, 2010. Good while supplies last. One HeartSAFE per fan per household. Thanks, Deal Seeking Mom!