I made a proof of concept of showing Grist documents on a static website without any special back-end support:
Normally Grist documents are hosted on a special server, which does all the computations and makes sure that edits by one user are seen by all. With grist-static, the computations and edits are moved into your browser, all the server does is provide assets (.html files, .js files, .css files, images, and now .grist files 
). If you have a scenario where you don’t need to save changes or share them between users (for example, if the Grist doc is some deliverable like a report or piece of analysis), then skipping the special server might be actually desirable, to have everything under one roof.
I’m not sure if anyone actually needs such a thing (regular Grist embedding is probably what you want usually) but it was a fun experiment! Seems to work fine on up-to-date Chrome, Firefox, and Safari.