A selectively collapsible lamp shade in which the shade is extended between upper and lower rings, the rings being held apart by a series of struts which are transverse to and engage the rings in a series of equidistant supports about the perimeter of the shade. The route generator is used for generating a route from a current position to a destination based on predetermined mapping data when receiving a route request. The hopper includes a floor-wall construction for holding the document stack.