With these 3 new Halloween traditions, you can use the Pumpkin Carving Station, Grab a slice of Zombie Cake (you need level 4 in Baking skill to make a Zombie Cake) and Grab Candies in the Spooky Candy Bowl.
This system adds more texts from NPCs and more interactive NPCs which gives your sims' relationships more life. Without your sims being around their family and friends they will continue to build that bond all on their own with visits, invites, and phone calls.
I swore I would mod out the constant phone use the second I saw it on the livestream. Here it is! No Constant Phone disables phone use when routing, chatting, and watching.