The most common American tradition adored by some of us Brits is the traditional milk and cookies tradition.

Here's what some other countries put out for Santa Claus.

In Scotland, whiskey is big and so is all butter shortbread, yummy. Santa Claus, in Scotland would see him getting warm with a whiskey and a few fingers of all butter shortbread.

In England and Wales, Santa Claus is accustomed to a glass of sherry paired with a mince pie or two.

In Ireland, children with supervision of their parents, would leave a glass pint of Guinness.

In Denmark, children not only feed Santa Claus, also two of his head elves. They serve up a bowl of rice pudding.  Commonly known as Risengrød.

Commonly, in the United States of America, the most famous Santa Claus snack of all is milk and cookies

In Chile, the children leave Pan de Pascua, or Fruitcake. Pan de Pascua is the traditional snack left for Santa Claus in Chile, as a part of the Christmas tradition in Chile.

In Italy, children believe that the snack on Christmas Eve for Santa is paneone bread. Christmas in Italy mean Christmas bread called panettone

But other things include

Gingerbread men and cocoa also works for santa as part it is part of the American snack tradition. And so do macaroon pastries

Here's some pictures of Ree Drummond's recipes she puts out different recipes for santa every year. For examples:

chocolate candy cane cookies

Ree Drummond's Chocolate Mint Brownie Bites

Then there's also some food network Christmas treats to feed Santa Claus.
These are peanut butter chocolate Christie's tasses

Reindeer cookies

These are just some of the ideas for Santa Claus Snacks.