3 of my friends and I have a weekly morning walk thing going on, where we would go for a approx 1hr walk early Saturday morning and go for breakfast after, rain or shine or snow or storm. So I see these 3 guys once a week.
Other than that, we have a core friend group of 8 people and we go for birthday dinners for each person's birthday. It's a tradition we started and kept doing since high school. So we get to see everyone at least 8 times a year.