Since it's so cold outside, why not a snow tile? Get it now from the Construction category!
Thanks to Grim for the suggestion
Coincidentally, this happens to be game build #666. Scary.
Halloween Pumpkins are officially sold out in the shop! You can still trade other players for them, though.
Pumpkins will be available until I remove them from the shop sometime this weekend. Last chance!
PS, I started my nanowrimo today! >:D