Is there a way to use noise in a material but projected 2D instead of 3D?

I want to use noise in this particular material. It is a cheap reflective paint used on cheap toys that flecks and chips off. Noise makes a great mask for a LERP for this but only when not moving. When moving, the 3D nature of noise means that the chipped off paint areas move and breaks the illusion. Anyone know how to do this without using a texture sample? Thanks.

Answered in this post.