A/N: My own take on Harry not being interested on Quidditch is that I believe that with Harry's upbringing that he would not enjoy physical/contact sports.
On Halloween morning, Harry, Amy, Susan, and Hannah went down to the dining room for breakfast to find that the house had been decked out for Halloween. There were nine hundred octillion orange and black balloons floating from the ceiling and a large orange banner with black creepy lettering reading Happy Halloween across had been pinned to the wall.
After a breakfast of waffles, sausage links, and Jim Beam, Heather said, "Stay seated, Yellow Quartet. Sirius and Amelia, you know what to do."
Sirius and Amelia disappeared and retuned a minute and a nanosecond later with four hollowed out pumpkins, each of them carrying one in each hand.
Sirius set the pumpkin he was carrying in his left hand down by Harry and the one he was carrying in his right hand down by Amy.
Amelia set the pumpkin she was carrying in her left hand down by Susan and the one she was carrying in her right hand down by Hannah.
"Okay, " said Heather cheerfully, "You can use simple magic to make Jack O Lanterns. Now, all you have to do is point your wand at your Jack O Lantern and say "Jackify while creating an imagine in your mind of what you want your Jack O Lantern to be. Since it is easy magic, why don't all four of you try it at once."
Harry, Amy, Susan, and Hannah all raised their wands at the exact same nanosecond and pointed them at their respective pumpkins.
"JACKIFY!" chorused Harry, Amy, Susan, and Hannah.
As Sirius, Amelia, and Heather had hoped, each one of the Yellow Quartet had created a different kind of Jack O Lantern.
Harry's Jack O Lantern took the form of a fwooper while Amy's was a dog, Susan's was a hippogriff, and Hannah's was a kneazle.
All four Jack O Lanterns had perfect form for what they were supposed to be and Sirius, Amelia, and Heather burst into applause.
"Way to go kiddos, " grinned Sirius.
"I love how all of you used something different, " beamed Amelia.
"I like that none of you went the traditional Jack O Lantern of just a face, " piped up Heather, "But would each of you please why you chose the form you did."
"I really liked the fwooper birds when we did that Care of Magical Creatures Lesson, " said Harry brightly, "I found I was drawn to the birds. Fwoopers are beauftul, happy and content birds. I think they represent everyone that is good about the peaceful life."
"Heather did tell me you were the only one to silence your fwooper on your first attempt during that lessons, " said Sirius fondly.
"As for me, " said Amy, grinning at Sirius, "I was really impressed by your transformation into a dog, so dogs have been on my mind the last few days."
Next nanosecond, Sirius transformed into a dog again. This time, Amy went up to the dog that Sirius now was and petted him. In response, the dog licked her hand. Sirius then transformed back into himself with both he and Amy giggling.
"I've found myself taking a liking to Sirius, " said Amy warmly.
"The feeling is mutual, " replied Sirius happily.
"It's hard to explain, " said Harry with a wide smile, "But the two of you seem naturally drawn to each other. I suppose sometimes things just click."
"Yep, " said Sirius.
"I chose a hippogriff because I just like how hippogriffs have strong bonds with their owners and are very loyal, but how that has to be earned, " explained Susan, "I like how you have to earn the respect and loyalty of hippogriffs by being respectful and loyal yourself."
"I'm so proud to hear you say that, " said Amelia sincerely, "I've always tried to raise you to value respect and loyalty above all else and you've clearly bought into that. But I also appreciate that you understand that respect and loyalty are earned and not given."
"I went with a kneazle because I admire the intelligence of the creatures, " said Hannah matter of factly.
"Kneazles are amongst the smartest magical creatures known to exist, " said Heather admittingly, "They're certainly the most intelligent species of cats."
Come lunchtime, Harry, Amy, Susan, Hannah, Sirius, Amelia, and Heather all enjoyed a lunch of tacos with black shells for Halloween and a side of tater tots with Johnnie Walker to wash it down with.
After lunch, Heather asked Harry, Amy, Susan, and Hannah, "Do you four remember that naked water balloon fight you had?'
"YES! cried Harry, Amy, Susan, and Hannah eagerly.
"Well, you're going to have another one again today, but with only orange and black water balloons, " smiled Heather.
Harry, Amy, Susan, and Hannah followed Sirius, Amelia and Heather outside and took their clothes off and quickly found the pile of orange and black water balloons.
As Sirius watched the kids naked water balloon fight, he turned to Heather and Amelia and said "These kids are obviously extremely comfortable with each other. None of the four mind the others seeing them naked at all. This is a great sign of a strong relationship."
As with the previous time, none of the knew who had won the naked water balloon fight and that was just fine with all of them. The phrase "Just for fun, " was what this was all about to Harry, Amy, Susan, and Hannah.
After redressing and going back inside, Harry, Amy, Susan, and Hannah found Topsy waiting for them with a plate of mini cookies.
The cookies were in the shapes of pumpkins, bats, cats, ghosts, and spiders. The pumpkin and cat shaped cookies had orange frosting on top, the bat and spider shaped ones had chocolate frosting, and the ghost shaped ones had vanilla frosting.
"Everyone can take a few, " said Heather happily.
Harry, Amy, Susan, Hannah, Sirius, Amelia, and Heather each ate three of the mini cookies and they were delicious. Topsy's work was top notch as always.
This had been an enjoyable day. They had all been able to put their more serious concerns aside for a day and just enjoy Halloween.
"Happy Halloween, " chorused, Harry, Amy, Susan, Hannah, Sirius, Amelia, and Heather joyfully.