This is the workflow I used to rapidly create the prop vehicles for TWD:M2W. A good overview of the challenge of this project can be viewed here: https://www.youtube.com/watch?v=hUZbkqLRYus&t=2s . Quixel typically wants a detailed model to bake interesting data maps to use to apply Smart Materials. But for these very tiny meshes we can still get solid results by supplying decent base maps (particularly height and ao). This let me quickly get PBR tuned maps created with lots of interesting detail in no time.