Think about it: Aren't arrows such a great thing? They can be complicated or simple. They're an image but they carry such useful meaning. And boy they're fun to play with in decor. Point to nothing, point to something funny or serious in your interiors or use them as decorative elements that just look lovely:
Arrow-related Apartment Therapy posts:
Arrow Accents for the Home
Trend Watch: Are Arrows the New Antlers?
House Tour Inspiration Success Story: Arrows by Satelluxe
(Images: As credited above)