I cobbled together an MVP (React + Material UI front end, Laravel server side) for a little SAAS that allows users to input customers, products and services, and then create line items and pdf invoices.
I did this to scratch my own itch for a simple time tracker with an actual timer feature for freelance gigs. I've been using it in beta since then, finally getting around to getting this bad boy launched. Next up is a landing page, for which I'll prob just use WordPress.