check out the STEM portal on share Point. There are several exercises on there that are easily deliverable on a parade night.
Leadership/initiative exercises are always popular. Run the Blue badge leadership; all the details are in the Training Officers area on Sharepoint.
Get in touch with your local RAF Careers and get them to come along for a visit. They have a really good interactive logistics exercise that they can do with the cadets.
You could run the pre-DofE badge for your younger cadets
Teach cooking in the field and have a Master chef competition
First Aid - set up a scenario with some staff made up as casualties for when the cadets arrive and they’re thrown straight into dealing with it.
Cas Sim - teach the cadets how to make fake wounds. We got in touch with another local Sqn and one of their staff came down and taught our cadets for the night
We have a few cadets who cycle to the Sqn so a couple of our staff teach basic bicycle maintenance.
Do something connected with RAF100 - research the history of your nearest RAF Station
Involve the cadets, ask them what they enjoy doing. We have NCO nights, when the cadet NCOs run the program for the evening, with the caveat that they brief the Training Officer in advance on what they have planned, so he can approve it.
You can get some great ideas simply by looking on Facebook/Twitter at what other Sqns are doing.
Hope that helps.