Tell HN: Rip glTF models from IKEA for fun and profit
I've been using Blender for planning moves between small flats - testing furniture setups in a virtual model is so fun besides being useful. Even a crude model allows me to make concrete decisions well in advance.
Modeling a non-rectangular room is pretty straightforward with a perspective matching tool like fSpy and a few measurements in real life.
Trying and comparing different furniture setups is as simple as animating the room over time! Blender allows you to split your UI to show multiple synchronizes views across the room. Add timeline markers to label each setup for easy discussion. Marker names will be visible in each 3D view screenshot!
Blender's Eevee gives excellent live previews without much hassle. I've been very happy just using the builtin interior HDR map and slapping screen-space AO/reflections on top.