Abstract: Method of making a sleeping box by taking a blanket or comforter and folding over the bottom of the blanket or comforter in such a way as to form a box like structure when the folded parts are secured, taking the two longitudinal sides that extend up from the bottom of the box to the top, lapping one side over the other and securing the same so as to form a closure.

Abstract: A fuel saving improvement in conventional home, commercial and public building heating furnaces comprising the inclusion of heat absorbing members such as stones on rod mesh trays in the normally substantial amount of unoccupied space above the furnace combustion chamber. The trays carrying the heat absorbing members are held, one above the other, by a metal support frame resting on the refractory material of the combustion chamber. The stones or other heat absorbing members are each at least three inches in cross sectional dimension and in spaced relation to each other. And the heat absorbing members in each tray are positioned above the respective open spaces between the stones in the next lower tray to cause a tortuous path for the heat and energy passing from the heating flame in the combustion chamber to the furnace flue opening. The heat absorbing members thereby absorb heat from the heating flames which would normally be lost to the flue opening during "ON" periods of the heating flame.