How about a few cans and homemade chicken broth (that you'll be making for the chicken soup anyway?).

Chicken Broth
can of clams
can of potato
throw a couple of spring onions in whole (take them out later - they'll still add flavour without chopping them up)
rice milk
salt
pepper

What noodles did you use in the soup? They may have been too big. Check out the very skinny rice noodles in the Asian section of your grocery store. Those are my dd's favourite 'chicken noodle soup noodles'.

Sorry, no canned soup in our house so I'm not the one to help you with that but wanted to offer up some suggestions as I saw that you weren't hearing from anyone else.