Domestic travellers in Japan often visit specific regions for the food / crafts / traditions they are historically known for. Below are a few resources to help you either find the right regions for the items you are looking for OR to find what the area you are visiting is famous for. I have hand picked these websites based on 1) usability (search) and 2) reliability of information.
Top Page｜Information Website on Japan Geographical Indication Products
→ this website lists what each prefecture is known for in terms of they food. this is called 「特産物（とくさんぶつ, tokusanbutsu）」
Kogei Japan -Traditional Japanese crafts
→ this website lists traditional crafts from all over Japan by category and by region
→ the Japanese word for traditional crafts is 「伝統工芸品（でんとうこうげいひん, dentoukougeihin）」
Resources for historical sites, site-seeing, onsen, and nature spots