The only thing I've changed recently are my wheels, forks, and deck.
Wheels were 6 months ago because my old ones were worn almost to the cores, forks because my old ones broke after almost three years of riding them, and deck because I wanted to upgrade to the Threshold and I didn't want to pass up an opportunity to get one early.
I don't change parts besides my deck unless they break. Next part I change will be my grips, bars, and clamp because my grips are finally about to have holes in them, bars because they're too short, and clamp because it's about to break.