Kinugawa Onsen and Kawaji Onsen are popular onsen (hot spring) areas 2hours from Tokyo. Why not relax in a hot spring at one of the many Ryokans with hot springs?
Tomioka City is 2hours from Tokyo. It's known for its UNESCO World Heritage site Tomioka Silk Mill and its history that helped form Japan's industrialization.
Kawagoe City is a city only 30min from Tokyo. It's known for its historically preserved area called Little Edo (Koedo) and is a captivating destination with foreign visitors.
Hitachinaka City is a seaside city in Ibaraki prefecture famous for Nemophila flowers and Kochia at the Hitachi Seaside Park as well as their fish market and delicious seafood.