Question: things to do tokyo free?
Answer: Hanabi - Japanese Fireworks. Picture from 1000 Fireworks In 5 Seconds! ... 
Matsuri - Japanese Festivals. Picture from Sanja Matsuri - Asakusa's Greatest Festival! ... 
Watch a Sumo Practice. ... 
Suntory Musashino Free Brewery Tour. ... 
Toyosu Fish Market. ... 
Visit Public Parks. ... 
The Imperial Palace East Garden. ... 
Meiji Shrine and Harajuku.