People that are retired tend to do similar hobbies. Here are a few.

Chisae, Hiroki, Eriko
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Script
Gf…grandfather Gc1・Gc2…grandchildren
Gf: I’m home!
Gc1: Welcome home grandpa!
Gc2: Today is your last work, right?
Gf: That’s right. I retired from the company today. I’ve worked for 40 years.
Gc1: Wow! Amazing!
Gc2: So, what are you going to do now?
Gf: Well…I don’t have any idea. Until today, I’ve devoted myself to my work.
Gc1: Oh, Grandpa. You should do something as a hobby.
Gc2: How about writing Haiku or Tanka? These are Japanese traditional poems, which
are composed of very limited syllables.
Gc1: You will use your brains when composing them, so I think they will do you good.
Moreover, you can contribute your works to newspapers or magazines.
Gf: But, I’ve never written Haiku or Tanka. I don’t know how to compose…
Gc2: Then, how about going to lectures for them? At a community center, you can take many kinds of lessons, such as Haiku, Tanka, English, cooking, a computer,…
I’m sure you will enjoy them and you can make many friends.
Gf: That’s sounds interesting! But isn’t it expensive? How much does it cost?
Gc1: Most of them are free! Anyway, you don’t have to pay more than 50 dollars per month.
Gf: Good! But ,as you know, the community center is a little far from here. It’s hard to go there every week.
Gc2: Mm…then why don’t you play gateball?
Gf: Gateball!? What’s that?
Gc2: Gateball is Japanese croquet. The rules of gateball are similar to those of croquet.
Gf: So it’s just croquet?
Gc1: No, it is different. In gateball we organize a team of five and we try to interfere an opponent for our team more than we ourselves try to make a goal.
Gf: It’s unique!
Gc2:Gateball is not a tough sport that many elder people play it.
Gf::But I may injure my legs. I’m worry.
Gc1: Why are you so hesitant to do anything?
Gf :I’m very afraid to start something new. Do you know any habit that requires my career?
Gc2: Hoom… You have high skill of construction, so… Oh! I’ve got it! You can participate in a volunteer group, and work as an adviser of construction in developing countries.
Gc1:I’ve heard about it, too. You can register with JICA, Japan International Cooperation Agency and go to developing countries to help people.
Gf: That seems to be interesting! But…
Gc2: What? Aren’t you satisfied even now?
Gf: Oh, it is not very serious, but I don’t live apart from you, and…
Gc1: And whom?
Gf: My wife, of course. For the present, I want to live with her, the only woman I have loved.
