3 things carried

The only thing I can remember him carrying in his pocket (constantly) was the paper doll of Sambo, it danced. Besides money and the package he had to carry, neither of which was carried in his pocket permanently......... his most important belongings were kept in the briefcase and are in the end burned, thus freeing him from his past.

In the briefcase are-

the remnants of the bank he destroyed

papers from the Brotherhood

and eventually the Sambo doll.