I was thinking that once the Game reaches a more " refined and finished " state [ I am aware that It hasn't reached Beta yet but Hey. It's still looking spectacular ], That there should possibly be a Door that requires a Code. Once entered, There would be a Large Room filled with several Glass Cells. In each Cell could possibly be the Older Models of NPCs such as 106, 096 and 173.
To show how far the Game has gotten.
The 106 could just be wandering around it's cell or hitting the Glass with his old Attack Animation.
096 would just sit there, Crying.
And 173 [ Or Multiple, Since he has had many Models ] Will all move once the Player blinks.
Let's not forget 513-1!
Of course, They are all incapable of doing any harm and are just for show.
There could be Documents stating Development Logs and possibly Credits to those who have helped make the Game become what it is today.
Possibly a Picture of Signatures [ Digital, Not Hand Written I guess ] or something and Comments from individuals. Like a " Thanks for Playing! " Room too.
There could also be a Spider with a Crown. ;)
Possible Easter Egg
#1
Deviantart
Steam
SoundCloud
SCP Containment Breach Sound Designer.
Favourite SCP is SCP-1845-1.