Company I used to work for did company ski trips once a season or so. It was always quite fun and good to just hang out and get to know folks who were new. It w

Company I used to work for did company ski trips once a season or so. It was always quite fun and good to just hang out and get to know folks who were new. It was, of course, optional and we did it over a weekend and invited spouses/SOs. Since we did consulting work and were always on basically 24/7 we made an effort to make it about relaxing tried our best to leave the work behind. I'd recommend that approach and just see what people do - usually some good ideas came out of it despite not trying to produce anything.