It's a tradition, in North America, (maybe other places too; I don't know) for kids to dress up in scary costumes on Hallowe'en and go door to door at neighbour's houses to collect candies. I did it myself many times when I was young, and I remember pushing myself to visit as many houses as possible to get as much candy as possible.

Some people take the holiday to an extreme and go overboard with decorations; my next-door neighbour here has their house and front yard covered in skulls, spiderwebs, and tombstones!
I'm told that the tradition evolved from the superstitious belief that "All Hallow's Eve" is the night when evil spirits roam the Earth and wearing scary costumes is supposed to scare them away. How this turned into kids getting candy, I'm not sure, but it's probably related to commercialism.

(Nowadays, a lot of kids dress up in store-bought costumes of popular cartoon characters, so Hallowe'en is a big business opportunity for some, but I digress...)
And yes, carving pumpkins is another Hallowe'en tradition. Most commonly, you scoop out the pumpkin's insides and carve a face on it and then put a candle inside so it looks like the face is glowing. Pumpkins carved in this way are called
"Jack o' Lanterns." (I'm sure there's an origin story behind that name, but I don't know it)
As I said, I didn't do anything special this year, but here's a picture of me from a Hallowe'en party last year. For anyone who doesn't recognize this character, there's a game here on CWF that you need to play.

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