If the reaction of the kids who come to my door is any indication the best is ring pops. You can sometimes hear kids shouting to other ones down the street “hey, this place has ring pops!”
Worst: those molasses toffees with the orange/white/black wrapper
Mathias Wandel on YouTube made some good videos a few years ago about maximizing airflow through a house with fans. One big finding was that rather than having a fan directly in a window or door pointing out it is actually best to have it a few meters away and directed at the opening. That allows the fan’s airstream pull in and start moving much more air in the room out the opening. He used strips of paper hanging in doorways around the house and also I think took anemometer readings to get good measures of the airflow.
I think the general theory is to run the fans starting in the evening once the air temp outside is lower than inside, then close up the house in the morning to trap the cool overnight air?
https://youtu.be/1L2ef1CP-yw?si=aLTlAMKv_3p3ri2q I think he may have made multiple videos on the topic
I think they are actually molasses flavoured toffee if it’s the ones I’m thinking of. Always left to the very last, only to be consumed in the more dire of candy draughts