Smartphone
I am willing to admit I am pretty reliant on my iPhone. I not only use it to stay in touch with people over the course of the day, but as a computer it helps me keep up with my emails, take notes when necessary, browse the web/do research, play the occasional game, and listen to music and podcasts.
Personal

Workstation
The computer I use at work runs on a multi user operating system that allows all of our employees around the state to upload files to a common drive to share information