When I want to relax and do what I really enjoy I start making large scale terrains such as national parks,... Half a day job, didnt go too much into details, some cleaning yes but not too much. I think I still got some nice details for 90 km, 55 mile terrain.
You can see more at:
https://www.turbosquid.com/3d-models/kenai-fjords-alaskan-glacier-national-park-2462740