Community TAs and certification

Hi, I was under the impression that community TAs would get a mention of their important role on their certification as a reward, however after reading too much in the support docs I have come to realize this was purely my imagination.

I was wondering: how should we underline and reward the time investment of community TAs.

If you have used the community TAs role in your past courses, how was it handled? How did you recruit and keep them active? I want to know everything!