I wrote an article on my initial work integrating MongoDB Atlas with PyScript.
Why MongoDB? They have the number one NoSQL database. Personally I really like the company, the products and the excellent tools they create. They have a free level that is very functional so that you can create database projects with minimal costs.
Unfortunately, it does not work because of CORS. Since CORS is becoming a roadblock for my work with PyScript, I am writing a CORS Proxy to run alongside the web browser. I will publish the CORS Proxy to GitHub once it is ready.