What to do in Aomori?

I'm basing in Aomori next month to visit Hirosaki and Hakodate. However, on my arrival day and departure days, I may have some time in Aomori itself. Looking for recommendations from those who have visited. Otherwise, I may just walk around the downtown and water areas.

My favorites are the Sannai-Maruyama Ruins, the Aomori Museum of Art (next door), and Furukawa Market, famous for its Nokkedon. I haven't been to Warasse or A-FACTORY.
https://sannaimaruyama.pref.aomori.jp/english/
https://www.aomori-museum.jp/en/
https://nokkedon.jp/news/detail.php?id=43
http://www.nebuta.jp/warasse/foreign/english.html
https://www.jre-abc.com/wp/afactory/index/
I haven't been there, but the Shiko Munakata Memorial Hall might be good (works are also exhibited at the Aomori Museum of Art).
https://munakatashiko-museum.jp/en/

Nebuta Wa Rasse Museum is a must. If you like fresh seafood, then make your own kaisen-don at Furukawa Fish Market.
https://www.japan-guide.com/e/e3750.html

Aomori is famous for its apples. About 60% of apples in Japan are grown in Aomori. Try a mall called A-Factory to eat/drink and buy apple-themed food/drink/souvenirs. If you like apple ciders (hard ciders), there is a brewery upstairs where you can sample some.
https://goo.gl/maps/D59Vqv2NhTAdGHf4A