As far as my husband and our children, we try to eat at least one meal together everyday, and have a family night or day on the weekends. The kids love hide-and-seek in the dark, grilling, and jumping on the trampoline together. The kids actually request family day/family night, and on their own send friends away if we are in or about to start family time.
As far as my siblings, aunts, uncles, etc., we have a yearly Thanksgiving gathering the last weekend of Oct or the first week of Nov. It's an 8 hour drive for us, but we try to make it. We also have a Christmas party every year, same location bc the majority of our family lives within a couple of hours of it. We try to schedule week-long family reunions every 2-3 years at a fun place -- Grand Canyon, Gatlinburg, a cruise, Jamaica one year (didn't make that one).
My family is pretty big -- I have over 40 first cousins on my mother's side -- we have a family website, too -- kind of like a private Facebook. We've had it for almost 13 years now.