This post was sponsored by BOSEbuild. All opinions are my own.
My daughters are six years apart, and at first I worried their age gap would keep them from being close.
As soon as my youngest began walking and talking, they started to play together. Since then they’ve been pretty much inseparable.
I love watching them laugh, snuggle, create and imagine together. Of course they have the occasional sisterly squabble, but they are truly best friends. The age difference wasn’t the barrier I feared.

How to build a strong sibling bond despite an age gap
Prioritize the family
When the family unit is a priority, children naturally develop loyalty to one another. Shared experiences create lasting memories and help siblings build strong connections.
We emphasize family through simple routines:
- Eating dinner together every night.
- Designating a weekly “family day” to do something together, whether it’s a trip to the playground or a visit to the zoo.
- Ending the day with a group hug before bedtime.
Give each child one-on-one time
Spending special time with each child individually reinforces that they are valued as people, not just part of a sibling pair. It also reduces resentment and gives everyone a little breathing room when needed.
Find activities they can enjoy together
Activities will vary depending on the age gap, but one universal connector is music.
My daughters love singing and dancing to our family “jams.” These are songs everyone can enjoy, and they bring the household together.
Ways kids can share a love of music:
- Create a family playlist with tracks everyone likes. These don’t have to be “kids’ songs” — upbeat, family-friendly selections from any era work well.
- Host regular dance parties. A few minutes of dancing lifts spirits, gives good exercise, and makes chores more fun.
- Give kids their own speaker so they can play their favorite music in their room. The BOSEbuild Speaker Cube is especially fun because kids build and personalize it themselves.

The BOSEbuild Speaker Cube is a Bluetooth speaker with BOSE-quality sound that kids assemble themselves. They can customize the finished cube with lights and silhouette covers, which makes it a proud, hands-on project.

My oldest (8) followed the instructions on the free mobile app and assembled the speaker with hardly any help. The app includes mini-games that let kids explore how sound works, which kept her engaged throughout the build.
My youngest watched with wide-eyed excitement, chiming in with enthusiastic approval: “That’s amazing!”

The build-it-yourself BOSEbuild Speaker Cube is a fun way for kids to learn and bond. With its hands-on assembly, customizable design, and quality sound, it encourages creativity and teamwork while giving each child something to call their own.
When kids build something together—or even watch a sibling build and celebrate their efforts—they’re building more than a device. They’re creating shared memories and strengthening their relationship.
How do you help your children discover the world and connect with one another? I’d love to hear your ideas in the comments.