Object Class: Safe
Special Containment Procedures: SCP-XXXX should be kept in a Low-security locker at Site-49. All on-site personnel should receive inoculation against the memetic effects of SCP-XXXX. If any personnel fall under the effect of SCP-XXXX, they should be treated with Class-B amnesiacs.
Description: SCP-XXXX is a red button, mounted on a steel box roughly 15 cm square, with the words “THE END” written on it in black lettering. The box exhibits a memetic effect- anybody who views it falls under the belief that pressing the button will cause the end of the universe, through a variety of mechanisms. No amount of reasoning, explanation, or evidence can convince them otherwise. When the button itself is pressed in their presence and the world continues existing, subjects adopt the belief that the destruction of the universe is not certain, but has a high probability of occurring with every press of the button. Certain inoculants can prevent this memetic effect.

Previous SCP Log:
Object Class: Keter
Special Containment Procedures: SCP-XXXX is to be kept at Site-██. It must be secured in a sealed and locked room with solid steel walls, locked in a solid steel case, suspended so that the button will not be accidentally pressed. The room must be vacuum-sealed and the doors are only capable of being opened by simultaneous use of three keys. The room must be guarded by no less than 10 armed personnel. Any testing on SCP-XXXX can only be done with the unanimous approval of the O5 council. Any personnel assigned to SCP-XXXX are to undergo psychological screening once per week. If any personnel show suicidal tendencies, they are to be immediately transferred. In the event of a containment breach at Site-██, the doors to the room containing SCP-XXXX will immediately lock, and procedures to eliminate all on-site personnel will be put into effect. This includes [DATA EXPUNGED]. If life signs are still shown after this time, all on-site explosives will be detonated, resulting in the complete destruction of the facility, aside from the room hosting SCP-XXXX.
Description: SCP-XXXX is a red button atop a steel box 15 cm square. Examination of the internal structure of the button shows that the button is capable of causing a ZK-Class Reality Failure event when pressed, destroying the universe in its entirety. Under no circumstances is SCP-XXXX to be pressed.

Basic draft of an SCP.