How about a bag of stashed money to prove your street credibility.
Always remember, cash is king. That is the number one rule in the streets. So don't go waving your shiny plastic around and expect to earn your neighborhood's respect. A single peek through the $tashed Money Black Backpack's notorious interior will show them what you got. Plus it has a nice clean exterior which helps in preventing unwanted attention. Other features include premium wax cotton fabric, side pockets, large interior pocket, sunglasses compartment and a real stash pocket.