Contraband Disposal

Contraband Disposal is a game mechanic exclusive to Class-D personnel which allows them to voluntarily dispose of all items currently in their inventory that are deemed illegal to possess by the foundation. On disposal, all illegal items present in the Class-D's inventory are instantaneously removed.
 
Contraband Disposal can be done by a Class-D by walking up to and interacting with any one of the numerous Contraband Disposal bins located throughout the site. To dispose of contraband, the Class-D must be in possession of illegal items and must not be handcuffed. Note that a Class-D that has disposed of their contraband may still obtain illegal items via the In-Game Shop.
 
Items considered illegal for a Class-D to possess consist of: • All forms of weaponry. • Tools like the Crowbar and Bandage. • Any objects received from SCPs, such as Candy and Fortune Cards. • Miscellaneous objects, such as Teddy. 
A majority of the in-game items are illegal for Class-Ds to possess, and there only exists a small subset of items that are not considered illegal for a Class-D to have:
List of Non-Contraband Items
Mop
Food Tray
Pizza
Coffee
Soda
Flashlight
Ventilation Map
 
Class-Ds with any illegal items in their inventory are susceptible to being put into Solitary Confinement.