What about
SCP-472 "Bloodstone"
What it would do : 472 would sit in its empty containment cell and when the player gets close to it, they will hear there heart beat.
If they pick it up or even be close to it, the other stages start to kick in.
Stage 1 : Have the screen waver like when theres an SCP like 173 nearby, this effect would dissappear upon leaving the area of effect.
Stage 2 : Screen shakes very slightly, but noticably gets worse, this effect would linger for some time after leaving the AOE (Area of effect)
Stage 3 : Along with stage 1 to 2 effects, the screen becomes tinged with red, and there would be a faint whispering sound, like with 008's creepy voices, this effect takes much longer then S1 or S2 to dissappear.
Stage 4 : Effects from stages 1 to 3 become much worse, now there will be bloodstains on the wall, screaming and images similar to 895's hallucinations, and strange corpse like creatures, this would take a LOT of time to dissappear, there will be a 65% chance of the player becoming unable to leave the area around 472, similar to 012's influence the player will not be able to leave, as if theres an invisible wall.
Stage 5 : The player becomes unable to leave as described in stage 4, but now theres a 38% chance of the player dying.
Stage 6 : The player can now leave the vicinity of 472, by dropping it and running away, continued exposure simply makes the effects randomly appear and become more irregular.
Probably useless, but would make for a creepy experience.