Although carabiners are primarily used for climbing and mountaineering, there are numerous other uses that you should consider before making a buying decision. Technicians who frequently climb poles for work may use carabiners to secure themselves as they move upward. Survivalists also keep them on hand to secure the gear and make emergency repairs. Some people even use carabiners as improvised keychains to hold multiple keys or shopping cards. Moreover, a carabiner can be one of the many exceptional gifts for outdoor enthusiasts.