Org mode also has a great spreadsheet system[0], making it easy to work with plaintext tables! I used Org mode in a school assignment to generate a gnuplot graph from an Org data table (which also had calculated data using formulas). This all would happen all in Org at compile time, since Org lets you evaluate code snippets[1] as well. The final result is that the table, the graph and the syntax-highlighted gnuplot code would all be put in the LaTeX document, and updating the code or data would take effect immediately when recompiling the document.

There's also other cool things like a habit tracker[2] that can also show you an interactive mode where you can see your progress.