If you’re anything like me, you’re always looking for simple, low-prep ways to keep your toddler engaged—without pulling out a million different toys. The other day, we ended up creating the cutest little train using our blocks, and it turned into one of those unexpectedly perfect play moments.
Honestly, this is one of my favorite LEGO DUPLO ideas so far because it combines building, counting, and imaginative play all in one.

What We Did
We used our DUPLO-style blocks to build a long, colorful train across the living room floor. Each “train car” was a little different—some tall, some short, some with fun roofs—and then we added animals on top to bring it all to life.
My toddler loved lining everything up and deciding who gets to ride where. There was a lot of “this one goes here!” and “no, the dog sits here!”—which is exactly the kind of play I love to see.
How to Set This Up at Home
This activity is super flexible, so don’t worry about doing it perfectly.
Here’s how you can try it:
- Start with a base
Grab your wheeled DUPLO bases if you have them. If not, just line up blocks to form a “train.” - Build each train car
Help your child stack blocks on each base. Try making each one a little different to keep things interesting. - Add numbers for learning
If you have number blocks, use them! We placed different numbers on each car and counted together as we built. - Bring in animals or figures
This is where the magic happens. Let your child place animals on the train and decide where they go. - Tell a story together
Ours quickly turned into a “train going to the farm” situation. The animals were traveling, visiting, and switching seats constantly. - Let your toddler take over
Once it’s set up, step back a bit. They’ll rebuild, rearrange, and come up with their own ideas.
Why This Is One of My Go-To LEGO DUPLO Ideas
What I love most about this activity is how much learning is packed into something so simple:
- It builds fine motor skills (all that stacking!)
- It introduces early math concepts like counting and number recognition
- It encourages creative storytelling
- And it keeps toddlers engaged way longer than expected
Plus, you can easily switch it up next time—make a zoo train, a color-themed train, or even a “passenger train” with little figures.
A Few Mom Tips
- Don’t worry about making it look “perfect”—your toddler will have their own vision anyway
- Mix in different toys (cars, animals, figures) to extend the play
- If attention span is short, build just 2–3 cars to start
This is one of those activities that feels effortless but keeps little hands and minds busy in the best way. Definitely adding this to our regular rotation of LEGO DUPLO ideas!

