At a previous employer, my dev team was pretty anti-social and we were in the basement of the building with a floor that was under construction between us and t

At a previous employer, my dev team was pretty anti-social and we were in the basement of the building with a floor that was under construction between us and the rest of the company. I noticed most of the company had no clue who were on the dev team or what we did. So I set up a weekly lunch where we would play board games while playing. This helped us get to know others within the company, and made us feel like part of a larger community. I am not sure if this is what you are looking for, but I was surprised by the results. They continue to do this even while I am no longer working there.