Hi Ashvan,
Thats a fabulous idea and i really like your intention of appreciating our HR folks, who all the time get ignored since they are the organizers/volunteers. I felt the same at times, but could not take a further step. Its a really appreciable thought but a bit tough to put it innovative any more, As HR are the people who all the time come up with one or the other ideas. As per my knowledge I would like to propose the below points.
Let me try with my way here, and I would like to put my version that what will i do, If I am in this scenario.
1. Engage them with the company's vision and mission, be transparent with management practices, and open them for the decision making discussions.
2. Appreciate their small small activities, where they will not be expecting any recognition of that activity. You may ignore appreciating for a Senior Manager- Closure or practice implementation but not for dealing a smart way of client/ employee interaction,
3. Trust them and provide challenging work, push them beyond their knowledge levels and make them realize they are not just what they think, and can do a lot more.
4. Provide some awards in the internal team, ensuring each talent will get equally recognize and get reward. Organize some fun activities, you taking up the total organization.
5. Speak to them, about their career approaches, mentor them in such aspects and guide them for a better path, Maintain a balanced work life relation with them.
6. Last but not least, You should be idle to them in all aspects and influence them with the your way of managing the things. Thats all the followers would be expecting from their reporting person in a general scenario.