A mobile phone holder is disclosed for mounting a mobile phone to the dashboard of a car. This mobile phone holder is integrated into the back of a mobile phone or is attached to the back surface of the mobile phone through adhesive pads, or suction cups, or is incorporated into accessories of mobile phones such as attachable card holding wallets, and etc. One embodiment of this mobile phone holder creates a closed loop around the air vent bars. Hence, shakes of the car will not cause sudden detachment and falling of the phone. In Addition, this mobile phone holder is portable and is carried by the mobile phone. Hence, the user can readily have it upon using a temporary car. Moreover, since this mobile phone holder is not permanently stayed in the car, it is not exposed to extreme temperatures and thus its wear and tear is lower than conventional phone holders. The loop that is formed by this apparatus can also be used for mounting a mobile phone to the handlebar of a shopping cart, the handlebar of a bike, safety belt of a car, a belt loop, belt of a user, strap of a bag, or other accessories of a user. This apparatus can also be used as a general purpose fastener for fastening two or more objects together, hanging objects from a bar. Such general purpose fastener can be used as a toy, strap of a watch, or bracelet as well.