Both our boys have had a year of Kiwi crates. We got them a subscription and when it ran out, the grandparents re-upped it for them. During the lockdown/COVID times, these crates were a godsend. Both kids loved them and would spend hours creating, crafting and learning. Every crate had multiple activities around a theme, which really helped land the educational aspects.
Getting the age level right is tricky. If the crate is too hard, you (the parent) end up doing it. If the crate is too easy, the kid is unsatisfied.