Quite simple, just requesting a bit of a graphic update/addition.
On rennet, please add a colored drip (like the ink) or something to better differentiate it from an empty jug. I currently appears to just move down about 1 pixel.
For cheese, or rather the racks, please add a shader or other indication that the cheese on the rack is done.
EDIT: Rennet's graphic was updated with the 10/03/09 patch.