For most of October and November pumpkins and ghosts ("ghostez") have been major topics of interest in our house. Kiddo pointed to every pumpkin he saw, image or genuine article, and shouted "punkin!" And his criteria for what can be considered a ghost is quite broad. The passage of Halloween did nothing to diminish his enthusiasm. The gradual disappearance of pumpkins from doorsteps post Halloween was a source of some distress.
Finally, when we were the only ones left in the neighbourhood with Halloween decorations remaining, and a few houses on the street had Christmas lights up, I decided it was time to make the ghost and pumpkin stickers adorning our front window disappear. I did this while Kiddo was sleeping (cowardly, yes). It took him about 30 seconds to notice this the next day.
To soften the blow, I had Santa, snowman, and snowflake stickers at the ready. Luckily, Kiddo has a love of snowmen that has carried over from last year. (A pair of snowman figurines never did make it back to the garage, even in July). To solidify the transition from Halloween to Christmas, we put up the Christmas tree. This was a huge hit, and Kiddo immediately announced the tree needed a star, "Up there," with much emphatic pointing). My old Father Christmas tree topper was on its last legs anyway, so Kiddo even got to go and pick out a star for the tree.
We stopped watching the Paw Patrol Halloween episode: Pups and the Ghost Pirate, and started watching Pups Save Christmas instead. We added some Thomas & Friends Christmas specials for good measure. Pumpkin talk has been successfully supplanted by all things snowman. However, Kiddo's new favourite Thomas episode is Diesel's Ghostly Christmas (aka Thomas's Christmas Carol). Thus, the ghost fixation is still going strong. I suspect we will still be talking about ghosts--or at least ghost trains--come Valentine's Day. I'm also a little worried the Christmas tree will still be up.