Heisenberg's Hat
Walter White wears this hat when doing business with drug dealers, crime bosses, ect. and calls himself "Heisenberg" as an alias.
Walt's Second Cell Phone
The phone Walt uses to talk with Jessie and Gus, and hides in various places like the tank of his toilet or in the ceiling of his classroom.
Hank's DEA ID Card
Walt's DEA brother-in-law's ID card
Gus' Box Cutter
The green utility knife seen in episode 401 that Gus uses to show Walt what happens to anyone that pisses him off
Jessie's Cigarettes
"Wilmington" brand cigarettes that Jessie carries with him and uses to hide the small vial of ricin he plans to kill Gus with
Saul Goodman Items
Various items representing Saul Goodman: "Better Call Saul" matchbooks, plane crash ribbon, and scales of justice
Los Pollos Hermanos Bag
Bag from "Los Pollos Hermanos", the chain of chicken restaurants owned by Gus
Gale's Lab Notes
Gale Boetticher's "lab notes" notebook found in his apartment by the police
Various Photos
Photo hanging inside the DEA office of Gus donating money, and crime scene photos of Gale's apartment.