Computers get abused quite often with food and liquid on the keyboard, dirty mice and fingerprints on the screen. Our laptops get even more grungy with portability, and/or sitting getting dusty.
So, take the time to take care of your investment. If you aren't using your computer, turn it off. Heat will damage your system, permanently so treat it with care.
If your ports are not getting used, they are collecting dust, which can damage them. Consider covering unused ports with a first aid adhesive tape (low-residue tape that won't leave behind any residue).
Invest in a small keyboard vacuum to help keep your keys free from dust and occasional cookie crumbs.
Did you know that keeping a disk in the disk tray will help reduce dust and protect the components in your drive?
Keep the computer screen clean with a slightly damp microfiber rag. Be careful not to used cleaners that are not recommended for your screen. You could permanently damage your screen with the wrong liquid.
Don't forget taking care of the battery, one of the more expensive replacement parts! If you haven't already read it, check out the article on batteries published in January.