What physical maintenance should I perform on a MacBook Pro?

I have a 2009 and 2013 MacBook Pro (MBP). My wife has a 2015 MBP. I'd love to maximize their lifespans by taking care of them physically. **What there any physical maintenance that I can perform on our MBPs to maximize their performance and life, and how often should I perform these tasks?** Which of these tasks can I perform at home, and for which should I bring my MBP to a specialist (e.g. for part replacement)? I'm thinking about removing dust, cycling the battery a certain way, restarting regularly, storing it for a certain length of time, cleaning external ports, replacing parts after a certain amount of time, etc.