https://github.com/alicevision/meshroom/releases

Meshroom - It's a free program that can used to 3d scan rooms and objects using just a normal camera. 

It runs on your nvidia gpu, takes a few hundred similar photographs from different angles and turns it into a 3d mesh. No time of flight lidar or stereo cameras, it just figures it all out using machine vision black magic to generate a depthmap and texture off it. The meshroom software itself is basically automatic, but the result you get at the end is hundreds of thousands of tris and several 8k textures so you'd want to do some basic Blender cleanup (just decimation and texture atlasing) before bringing it all into Unity.

Example: This coffee table was meshed from 120 photos and most of the holes are from light-glare off the varnish. With 200-300 pics the result would probably be perfect. Other anons have used this to scan their entire vr playspaces. It's pretty easy so if there's something irl you want to bring into vrchat, give it a go.