I had an old manual Royal office typewriter in my classroom throughout my career. Kids of all ages were fascinated by it. It stayed pretty much in working order, though the ribbon was long dried out. Had an old Underwood portable in there too. I gave them both away when I retired, no room to bring stuff home. Today they call it keyboarding, and most kids are fairly good at it by the time they're in high school, or so it seemed to me.