I usually have things with the kids - scouts, sports, church, First LEGO League, etc. but the summer is pretty quiet. There's also yard work. I get most of the other housework done during the week. Since I have a "day job", I usually spend part of the weekend lining up scheduled blog posts, tweets, etc. for my side things. I should spend more time coding for side projects but I don't.<p>Before kids, I used to go hang out at a bookstore for a couple hours and read whatever I found interesting, go for long off-road bike rides, volunteer for fund-raising walks/bike rides, volunteer with the Red Cross, hang out with friends from a ham radio club or college, etc.<p>If you can't reconnect with friends, just make new ones. Try meetup.com, look for tweetups or barcamps, go to user group meetings, join clubs (ham radio, model railroads / rockets, LEGO, cycling, etc.), take a class (cake decorating, painting, etc.), volunteer somewhere, go check out events at local bookstores / libraries, etc.