Got my BRZ a little over a year ago.
First few changes included an Optima battery(the factory one was a little under-powered for cold-starts in the winter), hood struts and mounting brackets, and an AirRaid cold air intake:
And more recently, a set of Motegi wheels and H&R Super Sport Springs:
I first tested the white via plasti-dip on the stock wheels, and after a month of that I knew white was the way to go for me.