I keep meaning to experiment with bable/tangle in Emacs.

I setup a simple literate configuration of my init file via markdown, which worked out really well, but doing it "properly" in org-mode would be a nice evolution.

With markdown I just search for code-blocks, write them all sequentially to a temporary buffer and evaluate once done. So it is very simplistic, but also being able to write and group things is useful:

https://github.com/skx/dotfiles/blob/master/.emacs.d/init.md