1. Shopping - Tokyu Hands will surely amaze you! There are many shopping malls in Shibuya so get the latest Japanese fashion items.
2. Izakaya - Izakaya is a Japanese word for pub. The unique thing about Izakaya is that its a place to enjoy drinks and also food. Most of the times food in Izakaya are great and thought to pair with alcoholic drinks. (Don't go to chain Izakaya with huge numbers of seatings, try to choose small ones located on small streets)
3. Bars - Shibuya has numbers of great bars, too. Such as Ishinohana. The bartender won a world cocktail contest. His matcha cocktail called Oribe was amazing.