of lugs pins protrusions 118 on an outer surface of the rim 116 which are configured to be disposed within a corresponding pair of apertures holes 120 present in the side wall 106 near the top end 108 of the hollow base 101 to allow the cap 102 to rotate turn within the hollow base 101 the cap 102 also comprises a lip 150 on the outer surface of the rim 116 which can be grasped by a user 39 s hand to turn the cap 102 within the hollow base 101 the cap 102 is further provided with at least one guiding means to guide the rotation of the cap 102 within the hollow base 101 in one embodiment and as shown in fig4 and 5 the guiding means of the cap 102 includes a pair of lugs pins protrusions 122 on the outer surface of the rim 116 of the cap 102 which are configured to travel in a pair of corresponding semicircular grooves 124 provided on an inner surface 126 of the side wall 106 near the top end 108 of the hollow base 101 the lugs pins protrusions 122 travel in corresponding semicircular grooves 124 in the side wall 106 of the hollow base 101 to allow the cap 102 to.