My idea is, that when you release the events, then these Easter Eggs is in there.
My thirst idea. Purple Guy!

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=409407386

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=409405472

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=409411392

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=409403264

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=409411562

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=409846248
I dident have room to take a screenshot of vent CAM 12.

Heres my second idea. Paper-plate Freddy beside the Freddy suit outside the door, and Paper-plate Bonnie in office.

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=409421750

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=409435845

My thierd idea. Golden Freddy and Golen Toy Freddy :D

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=409422841

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=409434668

One of the things that made pepole play your FNAF 2 map!

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=409846375

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=409846375

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=409846375

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=409846375
Thats really all i have for now. I hope you like my ideas!