We're grilling steaks for Christmas Eve (in upper midwest this is a bit of a feat because it'll be at most 20F..) Been thinking of relish trays at fancy restaurants we used to go to when we were little. Usually there were pickles (black) olives, carrot sticks, celery sticks and rye krisp crackers and breadsticks in little packages.
The good ones had those things plus things like radishes, scallions, pickled herring, pickled peppers, cheese, salami.
what else? e.g I read that there's a place in Vermont that serves the above with a dip made from cottage cheese and horseradish.