What are some common Japanese pastime activities?

Question:

So far, I can only think of anime/manga, baseball, j-pop, and karaoke.

Answer:

japanese girls will often answer "shopping and sleeping"

but the big cultural thing is IZAKAYA, japanese bars! people go with friends, coworkers, student clubs, and often get 2 or 3 hr drinking plans where they can drink unlimited amounts of alcohol for about $40. japanese ppl always eat while they are drinking too.

another thing is onsen (hot springs). EVERYONE goes, it doesn't matter age or gender. they go to relax, time out, enjoy nature etc.

younger people will often do purikura (photo booth) with cute poses and doodling on it.

there are also season-specific events, like hanami (flower viewing) of the cherry blossoms in the spring, mochi tsuki (making rice cake 'mochi') for new years, and fireworks in the summer