Agree with Mike. Other examples may be helping run the station website. Or the radio station as an SAC does at Marham. Can you organise a charity event?
Charity events are 'big' at Cranditz and I know that OASC do one for MacMillan Nurses.
Certainly getting involved in the organisation of a club or sport is always good. It is these things that led cohesion to a community or in the services. I used to avoid these like the plague
but once, as OIC Sailing, I had an RAF Standard dinghy sailor, only a lowly SAC, but he was involved and also involved with begging funding from SIF.
As for the rest of your CV and prep, looks good. . . .
Your line management should recognise your career aspirations and encourage you with appropriate opportunities.
edited - senior moment indeed. I am watching MJ.