If you don't have a dedicated vegetable peeler and you're in need of one, the top of a soda or beer can will actually work pretty well.
In this video from the Shake the Future YouTube channel, you'll learn how to safely remove the top of an aluminium can and turn it into an effective vegetable peeler in a matter of minutes. Remove the top of the can with a can opener, trim the edges so you don't cut yourself, and bend the part of lid where you'd normally drink from.
Now you can easily peel carrots, potatoes, zucchini, or anything else that needs a quick peeling. This trick can come in handy when you're out camping or even at home if you don't normally peel a lot of vegetables.