I reckon turning 2 years worth of essays into a book will take me about 100 hours. (*)
I reckon my time is worth about £10 an hour. Well, I reckon my time is worth a lot more than that, but that's what my day-job employer thinks it is worth.
OPTION 1: I make a book and sell it on Lulu at about a £5 mark up, say £15 for a 400 page book. I sell 200 copies, and make about £1000. There is an orderly Brexit and we all ride home on a pink unicorn.
OPTION 2: I run a Kickstarter, with a target of about £3000, assuming that about £2000 will go on fulfilling orders and £1000 is profit.
OPTION 3: I set a new tier $175 tier on my Patreon. If we hit that target, I will start working on the book, and put it on sale on Lulu at cost price (+free ebooks for all and prezzies for specially generous people.) Over twelve months I make an addition £1011.
(*) Approximate time to layout and edit 1 essay, 40 minutes. Approximate time to layout and edit 67 essays. say 45 hours. Time to make covers, contents pages, upload to Lulu, and e-book conversion, Another 24 hours. Another 19 hours because it takes longer than you expected. Another 5 hours because it always takes you longer than that = about 100 hours.