So many good ideas have already been mentioned.
Destinations-Locations.
At (or near) one of your bugout destinations, you might store a bunch of paperback books.
Most thieves would not take them. Choosing a town, as a possible destination, you might
consider a good Public Library as one consideration, not only for books, but human contact,
shelter, and internet wireless connection.
BOB, bag itself.
Radio and charger(s).
paper back book first half only: Man's Search For Meaning
http://www.amazon.com/Mans-Search-Meaning-Viktor-Frankl/dp/0671023373
I am a harmonica player (not very accomplished), and a warning is in order:
LEO's and presumably thieves-and-worse will follow the sound, especially in
the evening, but anytime it is out of place. First Hand Experience. Some LEO's
are bad guys, or one temptation away from being bad guys. At a minimum,
LEO's will be tempted to write a ticket for something; do not ask "for what?".
So take noise makers, but be smart as to when/where you use them. Examples:
do it in the daytime where there is lots of road noise,
do it inside a closed car.
As police modernize and add countermeasures to frustrate scanning (radio listening),
only rural areas will remain scanner country. If a scanner still works in your destination
area, definitely take one with you. It will add to your understanding and safety, and can
be fun listening.
Small internet phones are here now, and they will only get cheaper and more powerful.
Key element: charging them.