This is really funny to mention, as when I was in Iceland last year I felt really drawn to the beautiful symbols and runestones they have. I bought a charm for my bag and a pin (unopened- I keep it on my work desk!)
I had totally forgotten about their deeper meaning- so until you mentioned this, @Francisco, I didn’t realize that I guess I already use my personal symbol (a compass 
) as a protection charm! 
Amazing- thanks for bringing up the vegvísir! 