Moo.com offer a range of quality business cards and other print items including a recycled option. We get our business cards from Moo on recycled card and the quality is excellent at a reasonable price. They can print double sided cards and you can even have a different image on the rear of each. With this link you can get 10% off.
Dropbox Is a great way to share files with other people. I use this for sharing larger files with my clients remotely. Once you install the software on your computer it's a simple case of drag-and-drop.