Armus

SCP-4905 "String Lights"

Basically, an SCP that is a strand of 100 string lights, and within each light bulb currently attached to the string, is a small amount of neurotoxin gas that when inhaled causes quick death in the form of many brain hemorrhages at once. The bulbs are always looking like they are flickering and when stared at too long, it compels the person looking to want to change the bulbs.