About a week ago I posted a thread about potato salad and it contained some great ideas from everyone who commented, so let's do the same for macaroni salad. I have to make mine with ring macaroni and rings only. Also, I love to add tuna or shrimp, along with some chopped celery and onions. From there, anything goes. What's your pasta salad secret? Oh, BTW, don't overcook the pasta!