You could have an after school art club and make an arts center for children. Or a science club. Or a sports club which could include swimming, basketball, and skating (actually can children even skate I haven't tried it). Some sort of nature club where they collect things (again is that possible I haven't tried lol but if it is!!!) A music club - a club just for violin, a club just for piano. And you can have different clubs for different worlds so like there's the Swimming Club of Oasis Springs and all of those kids are really great because they live in the desert and spend half their lives swimming and the Swimming Club of Windenburg are like wholesome in their own way because they have the indoor pool in the city center because it rains half the year, or something like that.
Basically I guess just think about what children can do in their homes, and then figure out how you can introduce that to the entire world.