I drive tiny R/C cars. It's a great way to kill time, and it's a hoot. It's also pretty inexpensive. (ZZSE if it's on sale: 10$. Cheap diecast car for wheels: 2$. Better-quality aftermarket FETs: 10$. Being able to powerslide across your kitchen floor: Priceless.)
If that's not the thing for you, there's always the large stuff (which requires a larger track that you have to drive to, but due to the reflexes involved you're not going to be drinking much anyway. Also, kids eat this stuff right up.) R/C airplanes are also kinda neat, because you can fly 'em in the park while the kids do their thing.
Or maybe you don't like overcomplicated electronic gadgetry. Few people are into it, I'll admit. Why not take up cooking? It's actually a lot more fun than you'd expect if you've practiced enough; at some point you can get rid of pesky recipie cards and play it by ear. (Ever watched "Iron Chef?") There are numerous exciting ways to burn yourself with hot flud. (I currently have a blister about 1/4" high and 1/2" in diameter from a melted sugar overflow. Admittedly, such things stop bothering you.) Admittedly, this is not the world's most exciting thing to do, but good food will make your wife happy and lead to low-alcohol parties.
You could also take up bodybuilding. Get a set of cheap free weights (20$ if you get 'em used at sports-go-round), and pump a little iron while watching TV. (I really should do this myself.) If you get a weight bench, you can put it near the TV, so you can watch the kids while doing sets. And I doubt that your wife will object to this one either.
There's also cross-country skiing, but that is truly the realm of madmen. Enter at your own risk.