With the guitar itself.... The tuners are crucial. They have to be well built and smooth. Nothing sucks like hearing pings as you tune up.

I wrap the wound strings 2x and then the amount required to get it tuned. The plain strings get 3 wraps and the slack.

Pull them a little bit and they'll stay in tune nicely.

My SG has a tremelo and it's a bit touchy. I don't use the tremelo bar.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.