I'm looking for these button icons,
, that I found in the Apple developer's guide for working with toolbars (almost half way down the page, but I can't find them in the storyboard.
I found a bunch of other icons in the storyboard for images, as shown here on the right, and I expected they would be there but they weren't.
Where do I get all these icons that Apple suggests I use? I would really like to use the up/down arrows for casting votes in my app.
Specifically, where can I get all of the images found in this guide
(source: apple.com)
They are not available. They're just a list of icons they have developed for iOS as a showcase. You should look into making them yourself and applying them as a UIButtonTypeCustom. Small drawback is that if the iOS style changes (like iOS6 -> iOS7) you need to manually update your custom buttons while the rest is automatically upgraded.