I suppose you could use real Ninja throwing stars to hang papers up in your office or you could avoid permanent damage to the walls and just use these equally cool new Ninja Throwing Star Thumbtacks ($19). These shuriken tacks are more organizational in nature than deadly, but they look very realistic when the tack side is embedded into a surface. It's definitely a fun and fnctional illusion for any office, corkboard or cubicle, but never let a real Ninja find out you're using these imposter death stars or you'll discover real ones embedded in you! (via Michael Kiely)