How about putting airplanes cars etc together with those kits men like using their hands board games like Trivia Monopoly good luck

I noticed at my senior center, the guys that are there are involved in card games and pool tourneys.

Perhaps your first step should be to ask them. I am sure they would like to contribute to what they would like. Perhaps a movie day of westerns and war movies.

I think women tend to be more social than men by nature. Men are conscious of their diminished capabilities and don’t like to be in public. Women age more gracefully. Men like doing things like fishing, bowling, gardening or making things. Some like creative activities. The best thing to do would be to conduct a survey of things a man likes doing and put them on the survey as many as you can think of. Plus have on the survey a few open lines where the men can put what isn’t listed.

Domino games (easier to handle than cards)
Fishing trip
Gardening - use large pots or raised beds so people in wheelchairs or those who use walkers can participtate

OOPS! I just noticed you only wanted to hear from male senior citizens. I have had male relatives and friends who enjoyed the activities I mentioned.