I'm not sure specifically as I haven't read it. But it might be about a character named Buttons during Christmas time, perhaps his adventures, his experiences with family and friends, or how he discovers the true meaning of Christmas.
The main character should be Buttons. Since the story is named 'Buttons a Christmas Story', it's very likely that the story revolves around Buttons' experiences during Christmas. It could be a person named Buttons, or it might be an animal with the name Buttons.
Often, the movie adaptation of a book takes some creative liberties. But in this case, it could be that the buttons are a key element tying the movie and book together, perhaps representing a common plot device or character trait.
Titanfall 2's buttons were as follows:
A key: Squat/slide shovel while running
[B: Jump]
X: Change guns and Titan interaction
[Y key: reload Titan skill]
[LB-Key: Iron Rider Skill/Titan Protection]
[TL: Aim]
[RV: Throwing object, Titan skill]
RT key: Fire
Left Sticker: Move
[Right Joystick: Melee]
[Left direction key: select answer content]
Right direction key: Summon Titan/Titan AI Mode/Titan Core
Up Arrow: reload
[Down Arrow: Activate Run]
[Selection key: Scoreboard]
Start key: select scoreboard
Please note that these buttons are based on the search results provided and may change.
Well, the 'War of the Buttons' true story is centered around kids. These kids form groups and have this kind of territorial battle. The buttons are taken from the clothes of the defeated. It reflects the kids' sense of loyalty to their own group and their desire to prove themselves. It also gives us a peek into the social hierarchy that exists even among children at that time.
In Hollywood Story, you might have luck finding buttons in specialized craft stores. These places often stock a wide range of buttons for various projects. Also, some fashion boutiques might have interesting buttons as accessories.