I did something similar for a few clients, but mainly for automating documents. People were copying and pasting between Excel and Word, so I made them systems t

I did something similar for a few clients, but mainly for automating documents. People were copying and pasting between Excel and Word, so I made them systems that link the two together. I had enough clients asking for something similar that I made a SaaS product that does it. Gives them a nice little interface that links web form fields to named ranges, and then a simple templating language to insert those fields into a Word document. Instead of writing a calculation engine for our webforms, I just used Excel. It's pretty powerful, and more than I could have implemented if starting from scratch.