That simpler time when we don't have to think about bills and responsibility is tempting, but I really don't want to go through those school exams and spent the night studying all over again.
Neither do I. But given school takes up most of our childhood (whenever we wanted it or not), it still rooted into our nostalgia in later life. Such as colouring pencils we used to use, or the kind of textbooks we used to write on. Or school binders with those metal rings that could clamp your hand if you're not careful!
And heck, when it comes to home hobbies, even schools can be helpful. If a stationery shop is not available to you, you could ask your teacher for supplies you can bring home, or schools will sometimes have their own stationery shop to purchase textbooks, binder and such. The things school sell were supposed to be for schoolwork, but you could still take them home for your own interest and hobbies.
You could bring those blank textbooks home and use them to write whatever you want on them, or buy a binder with sleeves to use to collect comic issues with.