Perhaps they are in a small town for Thanksgiving and stumble upon a cult's ritual. The cult members could capture them and use them as part of their twisted Thanksgiving sacrifice. They would be tied up, surrounded by strange symbols and chanting, and have to find a way to escape before it's too late.
Another terrifying thing is that they could be in a place where a genetic experiment gone wrong has created some sort of mutant creature. On Thanksgiving, when they are least expecting it, this mutant, which might be a grotesque combination of a turkey and something else, attacks them. They have to use their wits to survive against this unnatural horror.
The sudden appearance of a ghostly figure is quite terrifying. For example, while you're focused on your book, you look up and there's a pale, translucent figure standing right in front of you, just staring with empty eyes.
One of the scariest things could be that the books themselves come alive. The words on the pages start to crawl off and form strange, menacing shapes. For example, the letters could form snakes or spiders that chase the people in the store.
During Thanksgiving, the Macy's Thanksgiving Day Parade can also bring some humorous moments. Sometimes the big balloons might get a bit out of control. Like one year, a balloon animal got tangled up with a street sign and it looked like it was trying to have a conversation with the sign. And in the family gatherings, if there's a competitive game of football in the backyard, there are always those clumsy players who end up falling into the mud while trying to catch the ball, which is really hilarious.
A funny thing that often occurs is when relatives start to tell old, embarrassing stories about each other during Thanksgiving dinner. For example, the time when Uncle Bob fell asleep in the mashed potatoes when he was really tired after a long journey. And everyone has a good laugh about it. Thanksgiving is also a time when pets can create funny situations. There was a cat that once jumped onto the table and stole a piece of turkey right from under everyone's nose, causing a lot of chaos and laughter.
One possible horror story could be that Bob and Tom went to an old, abandoned farmhouse on Thanksgiving to look for a rumored hidden treasure. As they explored the dark rooms, they heard strange growls. Suddenly, a shadowy figure emerged from the corner, chasing them out into the cold Thanksgiving night.
Another really terrifying Bob Jones horror story could be the time he got lost in a forest that was said to be haunted. The trees seemed to move and close in on him. He also heard strange growls and howls. He was sure that something was hunting him in that forest, and he barely made it out alive.
Funny things at Thanksgiving dinner? Oh, there are plenty. For example, if there's a new cook in the family trying to make the mashed potatoes and they end up lumpy as rocks. Everyone tries to be polite and eat them, but the looks on their faces are priceless. Or when the kids put on a little Thanksgiving play during dinner and one of them forgets their lines and just starts making up a story about a talking turkey. It always brings laughter to the table. Also, sometimes the gravy turns out too salty and everyone makes a big fuss about who's going to be brave enough to try it first.
In some of their stories, the sudden appearance of supernatural elements during a time that's usually associated with celebration is really interesting. For example, when the doors slam shut on their own in the old farmhouse. It's unexpected and adds to the horror because it shatters the normalcy of a Thanksgiving setting.
The scariest could be the sudden transformation of the peaceful festival into a nightmarish realm. For example, the words from the books start floating in the air and turn into sharp objects that attack people.
Well, finding unexpected things in rooms can be terrifying. For example, once I found a dead mouse under the bed while cleaning. It was really gross.