Lucky Number

Advent day 22.
"Now how can I link my 300th blip to Xmas?" I pondered.
Simple utilise 3 of my grandchildren to draw a Xmas number each, and, hey presto, the number appears, grudgingly.
They are not always "good" at mornings, especially after not getting to be until half past one in the morning.
Lucky for me they are here.
It's my son's 100th blip today, so he also utilised their help.