So the Safari Hat looks as if it has been taken out of the Toy Box feature for WoD. However, from what Jonathan LeCraft said, the functionality of the Safari Hat buff being on while still wearing your normal helm will still be in place.
@perksnpeeves You'll still be able to do that. The functionality change stays regardless of toy-box-ness.
— Jonathan LeCraft (@TheCrafticus) July 25, 2014
So while it’s sad news for the Safari Hat not making it into the Toy Box, you can still rejoice at getting the buff while still wearing your normal headpiece. 😀