If someone has 60 BTC can he start a decent crypto business to make passive income? Please share some business ideas.
Congratulations of having as much as 60 BTC mr. someone 
I don't think there is business that giving passive income like you want. Even if, you need first to put A LOT of work to set it up, sometimes through years to get passice income with minimal effort.
So without some knowledge, some hard work its not possible even with such big amount of money.