I was out doing my rounds when I came across two carabiner multi-tools at different stores.
![](http://i145.photobucket.com/albums/r207/Chako_photo/Chako_photo002/IMG_7981small_zpsndolsntl.jpg)
The one on the right is built like a tank and included a locking gate via a bulky sleeve that screws up or down. The bulky carabiner also features a small LED torch. It is rather thick, and thus, the right carabiner also gives you an option to hang some keys off of a small loop located at the bottom.
The left carabiner is much cheaper in construction and overall execution. No need for a separate key loop however, as this one isn't far off from the typical carabiner dimensions.
![](http://i145.photobucket.com/albums/r207/Chako_photo/Chako_photo002/IMG_7982small_zpsw7gcdprh.jpg)