Cook celery for 8 minutes. Drain. Mix celery, mushroom soup, celery soup and water chestnuts together. Coat cracker crumbs and almonds in melted margarine. Sprinkle on top of vegetables. Can use croutons in place of crumbs. Onion and garlic are optional but good. Use a 9 x 13-inch greased pan. Bake 1 hour at 350 degrees.