I also left my job less than a year ago. At first, I was heavily preoccupied about my career and next steps, including when I would go back to work and then whether I would....
At the end of the summer, I decided to take a year off from working (and all the networking, etc.) and focus 100% on the girls.
I have 2 year old fraternal twin daughters. In January, they started at an early childhood education program (a pre-preschool that is play-based and offers them new enriching experiences and opportunities to learn each day). They're in 3 days a week (full days) and they really love it or we wouldn't be doing this. On these days, I read, read, read--books about Parenting and also about making the transition and/or planning to head back to work sooner or later (some book titles that might also interest you-- Comeback Moms; Going Back to Work: A Survival Guide for Comeback Moms, etc.).
The books on going back to work after being a SAHM are helping me "fast-forward" through what it would be like to not work for a few years and helping me to make decisions in shaping my life today. I am still exploring options, but will likely become a consultant (I'm a CPA) later this year, working part-time (3 days) and for a handful of clients each year to stay connected & current and select some good projects to further my career as well as avoid a work gap, per se. I'm trying to keep my options open and protect my marketability as much as possible while I take this time for my family and my well-being.
I'm also taking on-line classes at the local community college including "Starting your Own Consulting Practice" and "Starting your Own Home-Based Business" as FYI. (There are so many other classes for just about any interst). I also try to work out on these days by taking a one-hour fitness class through the park district.
With the girls, we go to the library (story hour & get a new batch of books) and have scheduled neighborhood playdates once a week. We also go to My Gym twice a week (really great/highly recommend, esp. the one in River Forest, IL).
We play at home in the afternoons (reading, playdough, coloring, dolls, animal toys; they love 24 piece PUZZLES!) On warmer days & in the summer, we go to different parks around town and practically live at the zoo (go once a week with the family pass; they have a great sprinkler area for younger kids to play in water plus the Carousel, Animals, etc.) Especially for older kids, the museums are great, but also doing things together that you might enjoy--e.g. cooking together or a cooking class together (even the "Dinner by Design" type options), going to a new restaurant for lunch or dinner, checking out topics of interest at the library or book store, going for a walk and browsing in your downtown area, going to a movie, etc.
Having a routine is key so you're not always thinking about what to do each day. Plus the kids look forward to the same activities each week plus trips to visit relatives, go to the store and/or a restaurant, etc.
I won't turn on the TV at all during the day if I can help it. I personally won't watch TV because I'm afraid of starting a potentially bad habit--I'm not currently all that interested in daytime TV anyway. I can always "DVR/TIVO" something important to watch after the girls are in bed. Occasionally, the girls want to watch a half hour show and that's ok, but we limit it to one or two shows a day (one hour or less). Because we operate without TV most days, they don't even miss it most of the time.
We don't live very extravagantly, but we do have help with House Cleaning once a week--so other than laundry, loading the dishwasher and tidying up each night, I don't spend any time on it! My husband actually strongly recommended that we do this and just plan for this expense so that I and/or we have time to focus on the girls instead, furthering my and/or our interests or just getting a break. I have a very nice & caring husband.
Good luck with your transition. I hope the book titles I mentioned are of interest and helpful to you. There are many others! I'm just scratching the surface. And, I'm pleasantly surprised how much I LOVE reading and learning new things again--e.g. not necessarily business-related, but personal life, parenting and "other" related.
Thanks, G.