It requires pretty focused attention, but D (now 15) likes to play games like Chess, Risk, Stratego, etc. Strategy games especially. Even a couple of games of chess a week is a treat for D.
Another idea is starting a hobby with him. D got into bug collecting last year, and it has added some zest to any normal walk in the woods or fields near our house. We also maintain a bluebird trail (have for years), so that is some time together every week. And a great opportunity for bug collecting at the same time!
