Free 3D Texture Sites
Create your own objects or Buy or get objects
on the epicgames.com site you will find under unreal every first of the months tuesday
freebies for unreal.
5 of them
sometimes worth hundreds of dollars.
but its consistent and every month - after a few years of collecitng you will have a large library of unreal assets!!
Lidar Scanning you can scan objects or scenes.