My favourite tool is my Blackberry (even though it currently doesn’t work). I then have a large supply of business cards that I give when needed. Emails for me are a must, but I have realised that I should only spend dedicated time on the computer, as apposed to live on it all day.
This could dampen productivity. I use the phone a lot, but find that emails can be more productive, and helps to cut conversation time.
I also have a lot of very long meetings, but I prefer to have meetings as an ends rather than a means to a decision or conversation.