Dougwalkabout,
The only real "dangerous" information is the copy of my pasport and I consider that an acceptable risk. The neighbors' house keys are coded in a manner that we know which is which but a thief would have a hard time deciphering. The binder itself is has been "domesticaly camoflauged".
In general, there are more valuable objects within plain sight that will tempt a thief. I feel the risk of losing the binder is minor to zero. Meanwhile, it is easy to get in case of a fast evacuation.
-Blast