In my old clan, we used to post our all time records for donations, requests, attacks, and donations in our clan description, which seemed like a good recruiting tool when we did it, especially as our records were pretty high. We used to get a lot of recruits trying to break our records.
In one of my current clans, they give out a $5 card to the player with the most donations or attacks.
In my other clan, stats are tracked weekly (gg, hh, war hero, donations) and a point is assigned for each (1/mil gg, 1/5000 hh, , 1/1000 donations, 1/increase in war hero). As such, you can have a top dog in each category, as well as top over all player.





