If this is a closing for a house a nice clock is a great closing present.  Another thing that is good is a gift card for dinner while your cients are moving.  moving is a stressful time so a free meal is always a great closing gift.

A really great closing gift is the new homeowners' manual, "About the House with Henri de Marne: How to Maintain, Repair, Upgrade, and Enjoy Your Home." It's a 463-page book that covers what homeowners need to know for repairs, improvements, etc. The cover price is only $16.96, and the publisher offers them in bulk at half price. That offer is at http://www.upperaccess.com/closinggifts.asp .