A great way to experience Tokyo is by riding a bike
All their bikes are meant for the city, though some are for leisure and others for speed. They also provide you with a helmet if you want and a lock so you can easily explore without having to bring your bike everywhere.
They usually open at 10:00 and close at 1930, it costs about 3000¥ for same day return and 1500¥ the 2nd day and onwards. 500¥ for helmet and locker as well.
If you show up early you get to rent it the whole day, and in my experience that is enough time to explore all of eastern Tokyo, like Yanaka, Akihabara, Ueno and ride along the Sumida river which I highly recommend.