Most iPhone owners have a ton of photos and videos on their phones. They tend to take up a large portion of the iPhone's built-in memory and while you may have everything backed up to the cloud, it's always reassuring to have a local backup for peace of mind.
That's where Kingston's DataTraveler Bolt Duo comes in. Available in 32GB ($60), 64GB ($90) and 128GB ($120) versions, it's essentially a Lightning-equipped thumbdrive that plugs into your iOS device and allows you to make a copy of your photos. There are other products like it -- theflash drive, for instance, and several cheaper solutions from no-name brands -- but Kingston is touting the Bolt's sturdy, clean metal design and simple user interface.
It's easy to use. You download the Bolt app, plug it in, and you're ready to start copying photos from your Camera Roll to the Bolt. You can choose to keep the photos on your phone as you copy them or delete them as they're copied. You can also opt to copy only photos and not videos or videos and not photos. And there's also an option to just copy photos you've designated as "favorites."
It's worth mentioning that you can backup up photos/videos from multiple iOS devices -- the Bolt creates separate folders for each device.