I was doing rnd about rendering and material in Huodini for one of project and have discovered very easy way to create material looks like used items or damaged items. Which this method we can create a materiel that looks more natural , used item , some dust or etc. It is very fun to play with those few sliders and materials. And also you can give it key animation and make timelapse videos too.
I have shared this R&D as my blog , you can read from: https://www.artstation.com/sercan/blog/vpZZ/houdini-procedural-material-with-material-builder