It's not very cool to get injured and need a cast, but if you have to have one, it's awesome to be able to print your actual X-ray on the outside! Now you don't have to keep answering inane questions about what happened. Just show them the break.
Though not the most practical device ever designed, you can't deny the charm of this little guy. He'll print your twitter feed for you so you don't have to bother with your phone! Useful? No! Cute? Absolutely!