What would you want for the world on Christmas?
I align with FOS’s list, and add a few things.
What we need is a set of machines, programmed to use sunlight and local matter to produce all the technology necessary to produce a copy of themselves and deliver:
1 clean water
2 nutritional vegan food
3 safe, comfortable shelter
4 freedom to travel where-ever you responsibly choose
5 recycling and sanitation systems
6 communication systems
7 medical care
Make this available to every person on the planet – no exceptions. Could be done 2 years after making the first one, if it takes two weeks for the first one to make the second one.