Special effects on 3D widgets?

Hello.
I’m working on making a 3D widget as sort of menu, and I’d like to apply some VHS like effects on to it, but I’m not sure what would be the best way to do so? Through a post processing material, or some other way?

Material, sure. For something more advanced there is:

image


Looks spot on at a glance:

Thank you very much for the help!