Buy, Sell, Trash

Buy- pumpkin pie
Sell- hershey kisses
Trash- hot dog

Bunny, Owl, Spider

Buy- Bunny
Sell- Owl
Trash- Spider

Notebooks, Books, Journal

Buy- Journal
Sell- Books
Trash- Notebooks

Philosopher's Stone, Game Console, Wizard Stickers

Buy - Game console the other option ig
Sell - Wizard stickers kinda pointless
Trash - Philosopher's Stone too powerful for anyone to keep

A regular coat, a warm hat, warm socks.

Buy Game Console
Sell Philosopher's Stone
Trash Wizard Stickers

Kneazles, Pygmy Puffs, Ferrets

Honestly, I don't know what's Kneazles and Ferrets are (only for now). Ferrets seems to be familiar to me but I can't remember it. I don't have the slightest idea of what I am going to write now, so don't be too angry or too sad for judging my options with yours, or whatever.
Buy- Ferrets
Sell- Pygmy Puffs
Trash- Kneazles

Next-
Pigeon, Owl, Parrot
All letters carrying birds. Mind it, Pigeon and Parrot are muggle used.

Buy - pigeon. I have a soft spot for pigeons. They're so cute.
Sell - owl. They're useful and cute in their own ways. Some people have to value them?
Trash - parrot. They've always creeped me out a bit.

Next:

Warm Socks, Flowing Scarf, Fuzzy Winter Hat

Buy Warm Socks
Sell Flowing scarf
Trash Fuzzy winter hat

Umbridge, Filch, Ms. Norris

Buy Ms Norris
Sell Filch
Trash Umbridge

Dumbledor, McGonagall, Harry

Really, we are extending this game to fantasy characters!
Buy- Harry I won't buy the famous Harry Potter, of course.
Sell- Dumbledor Sorry Headmaster, need to do so, a pressure, you know.
Trash- McGonagall I NEVER meant to do so.

Laptop, Phone, Radio