Cardboard is a common knife in Murder Mystery 2 (MM2). Available to all players in the current game version. Good first-tier item for players exploring early progression. Cardboard is a knife cosmetic used by the murderer role in-game. Obtained from: Knife Box 3. Community trade value: around x1 T1 Common ([https://mm2values.com/v3/?p=home MM2V]). Notably: The original name of this knife was "Recycled Knife" This knife, along with many other knives are from other Murder games. For example: Murder by CloneTrooper1019