I was just thinking today that I'd like a lockable cage for the back of my bike, for stuff that I lug around but would rather leave with the bike. I have two reasons for preferring a cage: first, that way the crackheads can see that the stuff I'm carrying is worthless junk, and won't try to break in just to see what I've got. Second, with a trunk here in DC I'd be concerned that Homeland Security would blow up my bike if I parked it anywhere for any length of time. Any ideas where to get such a thing?