If you have little ones and they are up early on Xmas morning (and what child isn’t? ) and the weather is clear then point them towards the heavens at 6:05am.
With a little luck and a couple of minutes’ patience scanning the sky to the south and southwest they’ll see Santa’s sleigh heading home! It will appear in the west and take about 4 minutes to transit.
It appears as a small but very bright dot travelling in a straight line.
(it is, of course, the International Space Station)