i say play sports or run as suggested. I was in a situation where i live in an area where i didnt know many people except those i work with and between signing up for, training, and running a few of those adventure races (tough mudder type ones) and joining a indoor flag football league i have filled in my spare time pretty well. good way to spend time and even get to know a few new people.

I also go fishing and like to tinker with random things. cars electronics etc. and I grow hot peppers.