What can you do with HKD$2.20 and HKD$1.70 in Hong Kong

Never thought of with HKD$2.20 or HKD$1.70, you can do something in Hong Kong. Believe it or not, newspaper cost around HKD$6, coke cost HKD$5, what can you really do with HKD$2?

:) At least but not last, you can take the Ferry to cross the victoria harbour between Hong Kong island and Kowloon. Top deck of the ferry cost HKD$2.20 whereas lower deck cost HKD$1.70