Keys found near library with red fob

I found a set of keys this afternoon around 3:10pm in the parking lot behind the Salina Public Library on Walnut Street. There are six keys on a black metal keyring, plus a bright red silicone fob and a small blue enamel tag shaped like a heart. One key looks like it might be for a Ford, and there's a tiny USB drive tucked in there as well. The blue tag has initials 'KC' scratched into it, which could help the owner identify them. I'd love to get these back to their owner; I know how easy it is to misplace something important.