Local interest/ activity groups

Hi all,

I just discovered the very cute Urban Sketchers group (@urban_sketchers_albany on Instagram) from the latest 518 newsletter email. I am new to the area and always on the lookout for small, interest-focused groups where I can get out and meet new people. I thought it would be fun to create a list of little-known local interest groups. Anyone have one they'd like to promote?

(Bonus points if your group has a high percentage of young people- 20s and 30s!)