A good treat for a man who enjoys being with you still would be sex or just attention for a night. Now vice versa, some men would like to be able to go out with friends or tickets to some form of entertainment such as sports, concerts, or even plays. Hope I was helpful!
In my opinion I think Super Bowl or basket ball with some few beers will be the best treat. Although this will vary in different cases depending on his likes. But in most cases men are more attached to this kind of stuff.