In Australia, Christmas falls in the middle of the summer. Some people take a basket of seafood to the beach that day.
It's too hot for reindeer in the Australian summer, so conventional wisdom Down Under (originated by Rolf Harris in 1960) is that Santa's sleigh is pulled by six macho white kangaroos (called "Boomers"). There's even a song about it, in which Santa and the boomers help a joey find his Mum.
Six white boomers Snow white boomers Racing Santa Claus through the blazing sun Six white boomers Snow white boomers On his Australian run