Electric guitar...
The 2012 Schecter that I've had since about 2015 has a Floyd and has actually never gone out of tune!
I don't ride it like Dimebag Darrel, but it's done it's share of divebombs, even to complete slack.
In fact, when I got it home, the first thing I played was Judas Priest's "Heavy Duty" which has a couple dive to slack parts and a power chord while slack with release to ring. I've played that song since it came out in 1984 and had never been able to do the dives. That was a "happiness for the soul" kind of day.
I've never even changed the strings on that guitar and I'm kind of intimidated to do it.
Youtube, here I come...when the time comes.