Vegvisir ("the viking compass"). It is said that if this sign is carried, one will never lose one's way in storms or bad weather, even when the way is not known. It is encircled by protection runes. This would be a cool tattoo.
Back of neck/finger VEGVISIR COMPASS: the Norse symbol of protection. “Vegvisir” is icelandic for “guidepost”. They believe that the wearer of this symbol won’t get lost and will always find his/her way.