My bag:
A black, 'construction-worker-style' lunchbox with many dents and scrapes and a screw missing on one of its hinges.
Its contents:
Passport photoez
Passport photo receipt
Birth certificate
Checkbook
Wallet
Clip-on sunglasses
Keys
USB key that keeps coming off my razzafrazzin' keyring
Business card from my school's Crisis Clinic
Cell phone
Chapstick
A tin of Archie McPhee's 'Death Mints'
A smallish 'jump ring'
One small nail
Assorted debris