In 1776 Founding Father Thomas Jefferson designed a mahogany lap desk and used it to draft the U.S. Declaration of Independence during a trip to Philadelphia. You can view the original in the Smithsonian or have a replica made by cabinetmaker Michael Barba barbchal@mail.pil.net for $495. Today's laptops are five to ten times more expensive than Jefferson's lap desk, require batteries and software, and probably hold far fewer brilliant thoughts.