You can read about my Day Zero project on its page here. It is an undertaking to prevent me from idling my time away - so there are some easy items on the list and some real undertakings!
It turns out that there is no numerical logic to the list; the first item on the list is "Finish writing 101 thing by the end of 1001 days" - turned out to be surprisingly hard to do.
I got to around 80 items and ran out of ideas; even using the 'popular' sections of the Day Zero and other tags it still became quite difficult to make the quota.
I then decided to re-order the list into themed sections, at which point I discovered several duplications slightly differently worded, so it was back to the drawing board (again).
I think a few hundred days had passed before I finally had 101 items (!).