It's been very tough, but we don't have a T.V., we do let our kids use the tablet, with restricted apps and time. Our neighbors below us hate us and are moving....because you know....five kids stomping around above them, but I guess this is the new reality. The best thing we did was smooth coat all the walls with plaster and then make 2 large chalkboard walls. I am constantly surprised by how well this worked out. I think the tactility of the chalk has been an important factor, one that I overlooked, as I always used dry erase markers. I'm a convert to chalk now and my kids only use the best, Hagaromo full-touch. Working on math homework is a dream now as I can easily sketch out geometric concepts and have them trace over it with their fingers. Sure you could do it on paper, but something about standing in front of the chalkboard makes it more compelling. Aside from that setting up a folding table on the balcony and buying them a bunch of mid-grade chemistry stuff has also worked out surprisingly well. A couple days ago they created a catalytic reaction that actually gave off quite a good bit of heat. Could they have injured themselves? Probably. I'd rather have them experiment and explore.
4 of my kids are girls, and this raises special challenges. We fought a war with both sets of grandparents about not buying them dresses or pink gender defining toys. I was shocked how much resistance we got on this, but I strongly advise parents of girls to consider what the value of gender neutrality is, and whether or not it makes sense for them to try and abide by it when buying toys or clothes. If you do, be prepared to meet with a lot of resistance, both from your parents and public school. Just my two cents.