So lots of questions have come up lately about guitars and music making in general. Anyone have a few maintenance tips for caring for their guitars?

I know a couple important things to do in dry climates and in the winter time:
1) Run a “cool mist” (not steam) humidifier in the room. This helps keep the guitar from getting too dry and, worst case, the frets from popping out.
2) Get a bottle of Lem Oil and treat the top of the fretboard once a year by loosening the strings, appling a couple of sprays on a plain white paper towel (paper towels with colored patterns on them will come off onto the guitar) and rub into the top of the fret board. Let the Lem Oil soak in and dry for about 10 to 15 minutes and then wipe off any extra Oil with a paper towel.

I’m interested in what others do to protect their investment.