[thehoff]

Volunteer work. I volunteer with one group (and have been doing this for almost 8 years now). I can't believe how many friends I have just from this one activity.

Neighbors. Just start talking to them. Have them over. We do this for football (NFL) games or just for dinner.

Surprisingly (or maybe not). Kpop concerts. My wife is very into this music scene. She has definitely made friends she keeps in touch with (friends she met at the concert). I went to one and I couldn't believe how many fans went alone and formed their own groups at the concert to watch/dance. And this is for all ages (I saw 80 year olds down to the teenagers). Edit: I should note that the concerts she has been to did not cost an arm and a leg.