4K Samsung monitor, Macbook 2015, Elecom Thumb trackball, Wacom tab, 3 sets of Headphones (all modded - T10's, TH-X00 and one being my own DIY headphone), Dac and Dual Mono amp hidden under desk and a semi-custom fully lit 60% KB to set it off.
I mean think about how much time you spend at work, might as well make it as fun and nice as possible, right?!