edge member 13 may be integrally molded with the flat portions 11 12 out of plastic alternatively as in the present illustration it may comprise a narrow wooden flange 0 8 inch high and 0 28 inch thick which is bonded to the peripheral edge of tray portion 12 for convenience the terminal ends of member 13 adjacent the tongue portion 11 are inwardly bevelled at an angle of 45 u00b0 in a horizontal plane and the upper edge is slightly rounded in the vertical plane to improve the appearance and remove any sharp edges or corners the leading edge of tongue 11 is tapered and as shown in fig3 the underside 14 is preferably perfectly plane to facilitate slidable engagement with table 1 as will be explained hereinafter alternatively it may comprise a small boss or projection for locking purposes as explained with reference to fig1 the one piece embodiment shown in fig4 and 5 is substantially similar in material and construction to the embodiment of fig2 except that the lateral edges instead of being straight are outwardly flared to provide a larger tray space 22 and the tongue 21 is slotted to accommodate bolts or other obstacles which may be present at the corners of table 1 or other edge section where it is desired to attach the tray the modified embodiment 20 is larger than the previously described embodiment being 11 325 inches long 4 8 inches wide at the leading edge of tongue 21 and 7 25 inches wide at the maximum width of tray portion 22.