I often find it interesting what people have on their computers and how they lay out their desktop. As I use my iPad Pro as my main computing devie I live by the apps I have installed. Below is the latest screen grab of my current iPad screen. I only have 1 screen as I like to organise apps into folders.
My main apps are:
Evernote for document scanning, note taking and article reading
OmniFocus which is my second brain
Calendar which helps me focus my time effectively
YouTube is my main consumption tool