You could make your own ranch dip - it's sour cream, mayonnaise, and ranch mix.... I don't know what measurements, but I know there is only a little bit of mayo in the dip. I just usually do it to taste - cut up a few carrots before I start so I have something to dip with!!!
Also we have a recipe that is pretty good, though I don't have measurements for that either (I'm not the measuring type

)! It's chicken simmered with petite diced tomatoes, sour cream, parmesan cheese, a little white wine, garlic, and 1/2" thick slices of onions. We always brown (cook about 2/3 of the way) the chicken breasts (cut into strips or chunks) with garlic, and remove it from the pan. Then you put in a small amount of white wine to break up the stuff that is burned on the bottom of the pan, and then stir in the petite diced tomatoes, onions, sour cream, parmesan, and extra garlic of course (hehe

love the garlic)! After that is heated, put the chicken back into the pan, cover with a lid and let it simmer until the chicken is completely cooked and the onions are transparent. Then I like to remove the lid to let the sauce thicken up. It is great served over/with buttered noodles, and is amazing left over the next day. Hope that helps!