My big hit is the walk every morning. I live out in the country so we see a lot of things and we pick flowers. We also have small farm animals so ofcourse that's a big hit too with he feeding. I also have a garden and fruit trees. The kids love to pick their own and taste.
As for activites with the small ones love ... 'Tickel bug' . I turn into a big tickle bug and run after them. The older ones love the swing, water sprinklers and hide and seek. Once in a while we have some sort of olympics or tournament. I bought like mini soccer games, mini golf, ring toss stuff like that.