It's heartier than a veggie salad, but I found a Lidia Bastianich recipe for a fennel salad once. IIRC, it was mostly thin sliced fennel, celery, maybe red onion, along with some matchsticked cheese and salami. I believe it has a lemon vinaigrette dressing. Maybe it's a faded memory, but I remember thinking it was delicious. I haven't made it since, but made need to Google it soon.