Are you working on a hard surface model? Do you need more details but your poly count is already way to high?
Use these 26 decals to bring your model to the next level!
What you get:
26x Decals (the decals consist of a normal-and a AO-map)
What you need:
Blender without any addons, Blender and DecalMachine Addon or any 3D software that can work with the above mentioned texture-maps
(A guide on how to use the decals without DecalMachine Addon is included)