You couldn't prepare this 3 days in advance, but maybe you could get the ingredients separated into proper proportions and then bowl it up the day of. *trying to remember*
spinach leaves, slivered almonds, dried cranberries, matchstick carrots, and for everybody but me, crumbled blue cheese on top.
I think that's everything.
Last time we made this I did it with miner's lettuce instead of spinach, and it was good.