I approached the 20-something hashtags by making a list from the beginning, rather than choosing day by day. I wanted to really consider what had influenced me and think back over the years to avoid recency bias.

And, of course, I ended up thinking of many others, sometimes moving things into a "runner up" category.

So, for each -- books and movies -- I ended up with an additional 20. (And just stopped with that, because I could easily do 100 and still feel I was leaving things out!)