Well it seems that my Original Easter Egg post was deleted, so I'm Going to repost it with updates on new Easter Eggs I made! 
Heres the originals:
1.The workbench shrine
2.Cave of the Unknown
3.Secret of THE STADIUM
4.Secret waterfall room
5.THE END*
6.Secret of Goodspring's Mental Asylum*
Heres The new ones!:
1.Hidden Cave base+Workbench Shrine+GTA Reference
2.Mystery of Sky Hotel
I will update this when I make more Easter Eggs
-Easter Eggs with * next to them means there's a video of it on Youtube-
Heres the originals:
1.The workbench shrine
2.Cave of the Unknown
3.Secret of THE STADIUM
4.Secret waterfall room
5.THE END*
6.Secret of Goodspring's Mental Asylum*
Heres The new ones!:
1.Hidden Cave base+Workbench Shrine+GTA Reference
2.Mystery of Sky Hotel
I will update this when I make more Easter Eggs
-Easter Eggs with * next to them means there's a video of it on Youtube-