Answer 1

If you mean to program properly that works at one go, refer this article -
https://sachinartani.com/blog/steps-to-write-perfect-code

If comfortable means comfortable, then coffee and wafers will be a good idea

Answer 2

If u're a music lover you could add music 🎶 to what Leonardo Monterey and Sachin Artani required ☺

Answer 3

Get some coffee and donuts
:p