May I show you my biggest - and probably never ending - project ever.
It started with a udemy course but I made a change here and there and at the end I had a complete apartment with an extra entrance, a bathroom and a WC to furnish; from time to time I open the file (actually version no. 105 IIRC) and add or change something I’m not happy with.
I’ve made a flipbook with the progress: https://book.designrr.co/?id=5641&token=16268094
(hope it’s okay to add a link?)