Depends on what your usecase is for what is “essential.”
I think keeping household documents, taxes, medical bills, etc… In a local only paperless-ngx instance is quite essential to the organization of a household where everything is searchable and able to be organized on multiple levels compared to a simple document folder on 1 computer.
Having a document or self-hosted wiki with an in - case - of - death document that gets backed up in an encrypted, but accessible by family place is probably the most “essential” thing.
Ugh, I wish I was in a good place financially to donate to everything I use… There are so many great KDE projects, and non-kde FOSS projects too! One day…
Okular, KDE connect, plasma, krita, freecad, libre office, KiCAD, local send, antennapod, gadgetbridge, immich, paperless, bookstack, home assistant & esphome, leantime… The list goes on, but even if I only gave 5€ per month to each, that would be more than 75€ per month and that is way above my budget with our renovation costs.
Not even to mention the good YouTube creators too! Maybe if I get a bonus at the end of this year I can spare 150€ or so.