College student living in college dorms for two more quarters. How would I keep an Air safe when I'm not around (besides taking it everywhere I go, buying a safe, or buying a locking file cabinet)? I know of some anti-theft bags but many of them are full-blown backpacks or messenger bags. Something smaller would be nice. Please don't me tell that the Air is the "wrong computer" for someone concerned about thieves because it's the right computer for someone attending a college on 2,001 acres (8.10 km2) of rolling, forested hills (University of California, Santa Cruz) or, really, for anyone interested, solely, in portability. And, I happen to like the Air . Again, any ideas?