Combining creative play with intentional brain development.

Spark Creativity Every Month!
Engaging activity boxes for 3-6 year-olds (and beyond!)—packed with fun, learning, and hours of imaginative play.

Expertly Curated for Growing Minds
Developmental activities designed by a pediatric occupational therapist to nurture creativity, learning, and fun

Fostering Meaningful Connections
Create endless moments of bonding and discovery with activities that bring children and caregivers together.

  • We are L-O-V-I-N-G it!! And I do mean “we”!they are having so much fun with the new activities every day + this is allowing me to be the intentional Pinterest mom I always wanted to be, while getting to press the easy button. A dream!

    Karley K.

  • I'm soooo excited - this is AMAZING. My grandson & I LOVE these types of activities and l've looked at other kits before but just attempt my own. By doing that - I realize the time & effort that goes into it. This is fantastic!!!

    Mary R.

  • My child was so happy when I opened it. I homeschool him and the ABCs and 123s are easy but it's daunting for me to put together my own art and crafts projects for him with all the other things I juggle on the daily. I'm so glad I found them!

    Zee N.

  • This little kit has really fueled some big imagination!

    Emily Z.

  • I have no idea how y'all can only charge $40 for these, they have so much stuff in them! Y'all really hit it out of the park with this box and I can't wait to see next months!

    Adelaide B.

  • My three year old is loving her box and with some modifications my one year old is joining in on the fun!

    Kaila L.

  • We loved our first activity! 😄 The boys were very engaged with it for a long time, probably about 20 minutes! It’s so nice to have everything you need right there in the box!

    Cassie K.

  • OMG it’s beautiful. The cards! It’s all so nice and pretty. These boxes are amazing and legit. We’re going on more than 30 minutes of play now and they love it!

    Sarah R.

Hi there!

Meet Bailey & Kelsi
We’re the duo behind Building Little Brains, a passion project turned mission to help you connect with your children in creative, science-backed, and meaningful ways.

Bailey, our creative designer, and Kelsi, a pediatric occupational therapist, are both moms to neurotypical and neurodiverse children. Inspired by the work we do with our own kids to help them reach their fullest potential, we’ve poured our hearts into every detail of our boxes.

What makes us different? Our unique science-based approach combines imaginative play with purposeful brain development. Each box is thoughtfully designed to spark creativity, encourage learning, and foster meaningful family connections.

We can’t wait to welcome your family into ours!

“Play is our brain's favorite way of learning.”

— Diane Ackerman, American poet