That depends of their age. Those who are too young to wait for Santa usually find their presents stuffed under the Christmas tree, or by the chimney when there is one in the house, when they get up on Dec. 25.
The grown children and adults often get and exchange gifts during the evening before (24 Dec).
French children likely leave out milk and cookies for Santa on Christmas Eve. Other possible treats include chocolates, tangerines, or even a glass of wine.
They leave their hats out for "Santa" to fill.
They Put cookies out for santa and milk and carrots for the donkey !
In Austria, children leave mince pies and a glass of Sherry as a treat for Santa. In the US, children leave milk and cookies.
Santa may leave a lump of coal for naughty children as a reminder to be kind and behave well.
before santa got there
Corn
A carrot for Rudolf and a mince pie for Santa.
Milk and cookies. When the children wake up in the morning to see the cookies and milk gone, they know Santa has visited. The most common items children leave for Santa are cookies and milk. Some will also leave a carrot or apple as a little treat for Santa's reindeer. The most common items children leave for Santa are cookies and milk. Some will also leave a carrot or apple as a little treat for Santa's reindeer.
Traditionally, kids in America will leave out cookies and milk for Santa.
Hawaiian children typically leave cookies and milk for Santa on Christmas Eve, similar to children in other regions. Some families may also leave out local Hawaiian treats such as fresh fruit or macadamia nuts.
A plate with porridge
Socks and undies