This is a great idea for a thread.
Something I've noticed about myself is that, on days when I have nothing to do, I get all out of sorts. It's good for my mental health to have a to-do list that I can check stuff off of every day, even if it's just ordinary chores. It makes me feel that I'm being productive and not wasting my time. Post-FIRE, when I don't have a job to provide automatic structure to the day, this will be even more important. It'll help to write this stuff out in advance, so I can treat it like a smorgasbord of activities to pick from to occupy myself. (Plus, I can steal good ideas from other people.)
Physical activity
-Get at least 10,000 steps every day, weather permitting
-Do some basic bodyweight exercises every day: pushups, situps, planks, pullups, squats
-Do some kind of substantial exercise at least 3x per week: lift weights, do yoga, go for a hike or a more substantial walk
Intellectual activity
-Read every day. Most years, I read between 30 to 50 books. Post-FIRE, I'd like to aim for the higher end of that.
-Do some other intellectually stimulating activity every day. Depending on preference: listen to a podcast, do a crossword puzzle, play a board game, watch an online class or lecture, or watch a documentary.
-Long-term goal: Get more cultured. I want to make lists of classic TV shows, movies and albums that I've never watched/listened to and work my way through them.
-Long-term goal: Learn a foreign language or a musical instrument.
-Long-term goal: Hobby coding. I've done enough of this in my day job to last a lifetime, so this isn't high on the list, but it might be fun to write phone apps or other little useful programs. Getting a Raspberry Pi to tinker with also sounds fun.
Other productive stuff
-Cooking: Make interesting meals every week using ingredients I haven't tried before. Possible long-term project: Pick a cookbook and make every recipe in it.
-Cleaning: Between vacuuming, dusting, mopping, organizing the closets, cleaning the kitchen and the bathroom, there's enough work to do at least one small chore every day.
-Warmer months: Work in my garden. Right now I just have flowers and herbs, I could expand that to a vegetable patch.
-Cooler months: Organize and deep clean the attic. Purge old clothes, old toys, old books and other stuff we don't need anymore.
-Long-term goal: Redecoration and renovation of my place. I haven't changed much since I moved in, I don't care too much about decor and I'm not the handyman type. But I could stand to paint, maybe retile the bathroom and replace the sink.
Friends & family
-Be the best parent I can be. I want to be there for my son all the time: reading, doing craft projects, helping with schoolwork and teaching him everything I know.
-See friends often! They're working, I won't be, I can tailor my schedule to theirs.
-Offer to babysit/have playdates for friends with kids, especially when school is out.
-Spend more time with parents as they age
Generosity & social engagement
-Give to charity at a 4% WR from my donor-advised fund
-Write and call elected officials often. Make my voice heard.
-Long-term goal: Volunteer a few hours a week with a worthy non-profit. This needs more research to see what fits my interests.
Travel
-Take advantage of all the cultural opportunities in or near NYC: museums, parks, concerts, zoos, botanical gardens, historical sites. One or two day trips a month sounds about right.
-Slow Travel Summers: Over the summers when my son's not in school, I'd like to pack up and go somewhere as a family for two or three weeks at a time, preferably somewhere we can reach by car. New England, the Canadian Maritimes, the Finger Lakes, the Great Lakes, and the southern Atlantic Seaboard all have interesting destinations. Or take a cross-country trip on Amtrak.
-Long-term goal: Visit every U.S. state.
-Long-term goal: Visit every national park.
-Long-term goal: Visit more countries. I've been to Spain, the U.K., Belgium and Iceland. Next few on the bucket list: France, Denmark, Costa Rica.