become a famous youtuber and you will earn dollar worth as 1 bitcoin or more in a month
That's a nice solution as well
Also I think about some more today
If one person give you a dollar you have a dollar
If 2 people give you a dollar each one you have 2 dollars
If 10 people give you a dollar each one you have 10 dollars
If 200 people give you a dollar each one you have 200 dollars
If 2000 people give you a dollar each one you have 2000 dollars
If 2000000 people give you a dollar each one you have 2000000 dollars
Each day more than 1 000 000 people use metro in NYC
So try ask for money people in metro
Or sell hot dog