Thanks everyone -- all good suggestions.
I have definitely thought of volunteering, but where I live, volunteering opportunites are in such high demand that generally you apply for a position and are put on a waiting list...and it can take months before a position opens up. I'm on the waiting list for a handful of places. It's a good problem for a community to have though.
The gym is on my list...I do need to get my butt in gear on that one. But as far as social type sports...nope. Not for me. I was the kid always picked last for a team in gym, so I avoid these like the plague.