High res images of in-game items?

Are there images available of the in-game items?

I want to make props of them! I want to make the props as accurate as possible. Gonna make myself a little store.

I've looked at the wiki, but unfortunately they're the small pixelated icons for the items....I can blow them up and do my best guestimations of designs, but I'm hoping that there are files somewhere of the full images. Unless, of course, they were drawn at that resolution in the first place.