This post reminds me of an article I read a few days ago. It was titled, 55 Things Your Grandparents Lived Without — Can You?
While a lot of the items on that list were a bit redundant, reading this post made me compare what productivity today would look like, compared to what it would've looked like in times past.
Granted, those were different times, so it's difficult to create a 1:1 comparison.
It was interesting to see Audible on this list. Today, a friend was just telling me that she loves audio books. I don't know if she uses Audible, but that's what came to mind when I read this post.
Last time I checked, you were very limited in your monthly quota of audiobooks on Audible. I think it was one audiobook a month.
That limit is a sharp contrast to Kindle Unlimited, where you're allowed to have up to 10 books at a time (as long as the author/publisher allowed them to be in KU). And, I think you can rotate books as much as you want.
One site I use for focus is e.ggtimer. I sometimes use it in a Pomodoro-like way, whereby I set a timer for X minutes, and focus on the set task for X minutes. When the timer's up, I take a break.