I need a Mac that I can lug around, collecting accidental knocks without worry, a Mac that can act as temporary backup if my MacBook Pro ever needs repair. In short, I need an older, expendable Mac that I don’t have to worry about. If you need one too, here’s some advice on what to look for!
There are some great advice and tips here. Even if your purpose is not to buy a spare Mac but, instead, to make the best of an older aging Mac you already have.