I find this fascinating; I do a lot of reading and writing (leisure work) outside my own specialization; Some I believe are possibly publishable, but I am reluctant so far to attempt to publish them. Is zenodo a good place for this in your opinion?

I would have published on arXiv, but to do that you need an endorsement from an established arXiv user in that specific category. And even then, you can only submit papers in that category. On Zenodo, I was able to publish quickly, and I like that I can see the number of views and downloads.