Ha Ha I waited for you to ask it, not wanting to take your ORIGINAL Idea....
Ok here goes....
My ID... birth certificate, car title. etc.
library card. that takes care of my movies, books, music, internet FREE...

One of each of those till I return them to the library.
A full and complete extra set of clothes to get a job or change to wash the other clothes.
(how much room do I have left?)
grooming items, brush, tooth brush wash cloth, small mirror.
cell phone with full internet capabilities.
tie a pillow and blanket compactly to the outside (like I did when I was traveling on the train)
stash of cash, a couple of tea bags, crackers...
small tablet, pen, pencil.... (pre internet games and writing supplies)
BY THE WAY IT ALL FITS, I tried it.

(well I don't have computer on my cell phone but......)
what did I forget?