You don't need to game saying thank-you.
Recognition is best when its timely, simple, and a regular part of your week. As part of the weekly update process, team members have the opportunity to send kudos to colleagues for a job-well-done.
We don't overcomplicate it, force it into strict categories or make it about money or earning points. We let it be about the simple act of saying thanks to a work friend and we think that's better.