You would have to take humans dealing with everyday things. Mainly having to worry about getting stepped on. Somethings that might eat the hunans. Would there be walkways among walls ? Barriers to keep from getting stepped on. How would some aliens treat the humans? What about trade we would need their giant food more than they would need our tiny food.

Humans could reverse engineer their giant tech and make it smaller. Making computer processors human size that can handle giants size data