Keys with red heart tag and blue key tag

I found a set of keys this morning around 9am in the parking lot behind the Stockton Arena on Weber Ave, near Center Street. There are five keys on a worn black keyring, plus a red enamel heart-shaped tag etched with the initials 'KP' and a small silver USB drive. The car key is a Honda remote and the blue plastic tag for a house key really stands out. They look in good condition overall, and I’m sure someone is missing them—they probably have sentimental value. If you recognize them, tell me where you last parked or describe the red tag and USB drive, and I’ll get them back to you.