I've done carrot and cucumber curls on salads for a different texture.

I rarely buy zucchini, but my spiralizer was totally worth it for the summer when I was growing zuke. Pretty much already paid for itself if you compare it to the cost of the equivalent amount of shirataki noodles. I never really liked zoodles the times I sliced them by hand with a knife... just something about the texture and irregularity of size. I'd never get sick of the spiralizer sliced ones, though. So it's definitely one of my favorite kitchen toys.

(ETA) - Mine's the hand-held Vegetti, too. I don't have room for the big one. The Vegetti might be a problem if you have carpal tunnel syndrome or something, but zucchini are soft enough that it's not much of a problem for most folks.