Accessory suitable for being mounted on different attachment elements

Personal accessory comprising:

• a first face,
• a second face,
• a lateral face connecting the first face and the second face, the accessory being characterized in that the second face comprises a slot extending to the lateral face, so as to form, on said lateral face, a hole the shape whereof is defined by a transverse cross-section of the slot, the slot having, in transverse cross-section, an open contour, the contour comprising:
• a bottom,
• a first lateral side,
• a second lateral side
• an opening,
• the first lateral side and the second lateral side connecting the bottom and the opening, the first lateral side comprising a first part approaching, from the bottom towards the opening, towards the second lateral side, the second lateral side comprising a second part approaching, from the bottom towards the opening, towards the first lateral side, the dimension of the bottom of the contour being constant or decreasing along a direction defined by a direction extending substantially perpendicular to the transverse cross-section of the slot and going from the hole of the lateral face towards an inner part of the accessory, said slot being intended to receive a fastener, the accessory comprising a magnet, the magnet being intended to maintain a relative position between the accessory and the fastener.