I am not sure how the apple peeler/slicer idea would work with things like zucchini but they do certainly work with harder veg and fruit such as those you mentioned, Bojana. They create a spiral however and that may be hard to 'unwind' without breakage.
Here is a link to one like the one AlaMoi showed pictures of, for sale on Amazon.
http://www.amazon.com/gp/product/B00K54HPXQ?*Version*=1&*entries*=0