the sand 14 the outer edges of the lower portion 30 are provided with a serrated or jagged surface preferably toothed edges with points of the teeth inclined upward to facilitate the pressing of the portion 30 into the sand 14 the form of these serrated edges is such that when the stem 30 is inserted into the sand it resists withdrawl or dislodgement which might have a tendency to occur such as by a movement of the device or by tugging on the blanket whose corner is held in the slot 24 of the upper part 25 of the device 20 referring to a preferred embodiment of the inventions shown in greater detail in fig3 and 3a it is seen that the upper portion 25 of the device is provided with two rows of serrated teeth an upper wider spaced row 26 and a lower row 27 spaced at a relatively narrower distance each row being substantially symmetrically located about the center line of the device 20 the upper part of the slot 24 i e the row of cooperating serrated teeth 26 provided in the holding slot 24 and located closer to the tapered mouth 28 has a larger width than the lower part of the holding slot which is provided with cooperating serrated teeth 27 this arrangement functions to accommodate a greater variation of thickness of fabric e g a relatively thicker blanket fabric which would be retained in the upper part.