Peer recognition program in M365. Has anyone done this without a third-party tool?

HR wants to launch a peer recognition program where employees can give kudos to each other. They want it visible to the team, maybe tied to company values, and ideally something that feeds into performance reviews at year end. I looked at Viva Engage but its more of a social feed and theres no way to categorize recognitions by company values or pull them into reviews. Has anyone built something like this using M365 tools or found an app that handles it?