I've made them (they're called maquettes) before for a coupla projects. Not as big as 1/3 sized though. Even just a foot or so tall would be enough for you to get a handle on how it'll look full sized.
Here's one I did.


Took notes right on the side of the maquette itself.

I've didn't do cardboard for the last one though. Just a 3D model. Don't have the model for that one online, but I do have one for the same cabinet pictured above after some revisions & modifications.
