thats a good idea! we were thinking about having the guy/girl who post the fastest lap on the specific track for the championship on the wall with a image of themselves with there car and the track and there time. Not only is this a little paddock bragging rights but also its just something cool and very low cost.
I used to race at a club where we had one super nice wooden shield and each champion got there own golden mini shield on the main one and the winner for that year got to keep the shield for the next championship and so on. Which was good because still low cost and you had to retain your title to keep the shield as it was so nice