I agree for SCP-500's pill case, it would make keeping the pills with you easier (and maybe adding it could be a good reason to make a containment chamber for SCP-500). The only problem with it could be the fact that you could get all the 3 pills and have a lot space in the inventory too, that could make the game ultra-easy. Maybe placing its containment chamber in the Entrance Zone with a high clearance level (level of the KeyCard needed...) could be a good idea; and the pills can be used only for testing or in extreme cases, so the high clearance level is justified...
SCP-1155 could be a really easy SCP to implement, maybe instead of having it at Gate A or Gate B it could appear randomly on a wall of the Light Containment Zone corridors' and it would kill the player if he approaches it; that could be a really original and unexpected jumpscare.
Great ideas, though!
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