I see my thread was already linked to
Personally, when I am not totally broke, I leave my cave more often, but I'm still a homebody. Lately I tend to go to the library cuz it's free, but I'm pretty in and out. Other stuff I am inclined to do regularly: coffee shops, yoga class, church/volunteering, concerts (especially small club shows), bookstores, record stores, the beach (with a book

), makeup/clothes shopping, and museums.
Maybe once a month I go to a bar/lounge/club with friends, but that's maximum.
I also do typical errands, but you'd specifically find me at like a Trader Joe's grocery store or health food store or farmer's market type of places. Example: when I had a job I'd get lunch at this local health food store all the time. I tend to frequent local establishments over chains also, but that's not intentional. I've noticed other INFPs saying that too though.
Anything to do with music, art, culture, and books is a pretty good bet. A lot of INFPs enjoy nature and animals a lot also. Taking walks and riding a bike are things I like to do outside, but I'm more likely to be in a downtown area and people watching than in nature.
I also tend to do stuff alone or with few people - so I would look for INFPs alone or in a pair. Often, when I am with people, I am at places I'd be less likely to choose to go to myself. I'm pretty easygoing in that way.