Do you mean like a macaroni salad?

If so:

http://www.theveganplace.com/2006/07/01/vegan-macaroni-salad/

Vegan Macaroni Salad
By: cindymm
In: General Chat, Recipes

I am going to an impromtu family reunion today. The instructions are to bring a tritip and a side dish to share with all. So I let my mom take care of the tritip part. I myself am bringing vegan boca burgers. As for the side dish, I am making a vegan macaroni salad. I don’t plan on telling anyone it is vegan. Let’s see if it can fool the masses (he he). I just had a bite and it should unless my mom goes running around telling everyone it is vegan.
Anyway, here is the recipe:

24 ounce bag small elbo macaroni
1 small jar sweet relish
1 cup vegenaise
1 tbsp mustard
2 stalks celery
1 yellow onion
1 can whole black olives
1 teaspoon salt
Bring water to a boil in a large pot. Add macaroni noodles and cook for 10 minutes, or until tender. Drain and rinse a couple of times with cold water. Chop up onion, celery and olives and put in a large bowl. Add relish, noodles, vegenaise, mustard and salt. Mix together and let chill for a couple of hours.

I like black olives but I don't think of them as being in a traditional macaroni salad