Mike McLaughlin has begun posting 25 ways to get closer to your clients on his Guerilla Consulting blog.  His first tip:  Send a Lumpy Package:

In the professional services business, small gestures have a big impact. When you land a new client, send a welcome package to your sponsor. Include a personalized letter in the package, along with other items such as firm contact information, a list of upcoming events, relevant articles, or an appropriate book.

Use the opportunity to express your gratitude to the client for engaging you, and to let her know how important the project is to you and your firm.

Send welcome packages by postal mail, not e-mail. You'll be amazed at the strong and positive impression you'll make with this one simple gesture.

Keep checking back for more great tips.  I’ve read Mike’s great book, and hope to connect with him next week when I’m in San Francisco.