Lap desk
(重定向自Bed desk)

The lap desk is both an antique and modern form.
As an antique the lap desk is a smaller variant of the writing slope. It is also called a writing box or a writing cabinet. In certain instances it is known as a portable desk, a term which is usually applied to larger forms. Most antique lap desks are really meant to be used on a table or some other stable surface. They are often strongly built of fine hardwoods like mahogany or walnut.