I just shared it on Twitter so you can see 😄 twitter.com/markdalgleish/status/8997497900486983… - I've got a 15" MacBook Pro (Mid 2015) hooked into an external monitor on either side, with an external wired keyboard and Magic Mouse.
My work desk is an electric standing desk, which I really, really love. I find it a much more natural position for working—it makes me feel more awake and energetic, which helps when I'm deep into the code.
The apps I have open most of the time are Atom, iTerm, Chrome, Slack and Radiant Player (for Google Play Music). In terms of music, I always have the obligatory headphones at the ready, since I'm in an open plan office but I also like to actually get stuff done...