Hi,
Events could be conducted & planned according to Age Group. Say for an example:
For Middle Aged : Brain Teasers could be asked & one minute game could be played with quick actions.
Putting these kind of events in between your regular function would make a difference in respect of holding interest to the employees & the same might be played enthusiastically.
And For Senior Profile People : Arrange some cuttings of cartoon or some meaningful pictures in a box & tell them to pick n hold 4 pictures randomly n take a seat.
After they picked up the same divide these number of people in 2 to 3 groups or number of groups you want them to be into.
Ask them to arrange a meaningful story accordingly on the basis of samples picked up from the box.
This option will be disclosed only after picking up the cuttings.
Please put your feedback after conducting or trying out the same.
All the luck.
Lakshmi