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.
Link to 55 forearm tattoos for men- There's this really cute one with pine trees and a wee little Been seeing this alot lately. Tats that look like photoshop collages. Maybe this is how i will design the next tattoo