Design your own lego® kit - Fun at-home activities for Kids.

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Design your own lego® kit

Design and build your own LEGO® kit: plan a model, sort bricks, create instructions and box art, then assemble and test your finished design.

Table of contents

Step-by-step guide to design and build your own LEGO kit

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How to Make a LEGO Modular Building

What you need

Lego bricks, paper, pencil, colouring materials, small box or zip bag, tape or glue, ruler, scissors, adult supervision required

Step 1

Gather all your LEGO bricks and the paper and pencils in one tidy workspace.

Step 2

Choose a fun theme for your LEGO kit like a race car castle or space rover.

Step 3

Give your kit a catchy name that matches your theme.

Step 4

Sketch a simple plan of your model on paper showing how it should look.

Step 5

Sort the LEGO bricks you need by color and type into small piles or cups.

Step 6

Build a first prototype using your sketch as a guide.

Step 7

Test the prototype by checking its stability and any moving parts.

Step 8

Pick one clear improvement to make based on your test.

Step 9

Make that improvement to your prototype to make it stronger or cooler.

Step 10

Count each brick you used and write a parts list with quantities.

Step 11

Create step-by-step building instructions by drawing or writing each build step in order.

Step 12

Design box art by drawing the finished model and writing the kit name and a short description.

Step 13

Put the counted bricks into the box or bag and add your instructions and box art to make the kit.

Step 14

Share your finished creation on DIY.org

Help!?

What can we use if we don't have enough LEGO bricks or small cups for sorting?

Use Duplo or other interlocking blocks as substitutes for LEGO bricks and sort pieces into muffin tin compartments or labeled zip-top bags instead of small cups while following the 'Sort the LEGO bricks...into small piles or cups' step.

My prototype keeps falling apart when I test stability—what should I try?

To fix a weak model from the 'Build a first prototype' and 'Test the prototype by checking its stability and any moving parts' steps, reinforce the base with a larger baseplate or interlocking plates, add cross-bracing bricks, and simplify or tighten moving parts so they connect more securely.

How can I adapt this kit activity for different age groups?

For ages 3–5 use big Duplo pieces, pre-sorted piles and a very simple sketch to build a prototype, for 6–8 let them sketch, sort, build and count bricks with some help, and for older kids have them write a full parts list, create detailed step-by-step instructions and professional box art to share on DIY.org.

How can we make the finished kit more exciting or personal?

Enhance and personalize your kit by adding stickers or small LED lights, numbering bricks to match your 'parts list', creating a printed instruction booklet and custom 'box art', and including a spare-brick bag before you 'Put the counted bricks into the box or bag' and 'Share your finished creation on DIY.org'.

Watch videos on how to design and build your own LEGO kit

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Here at SafeTube, we're on a mission to create a safer and more delightful internet. 😊

Create YOUR OWN Lego Sets! | BrickLink Studio

3 Videos

Facts about LEGO building and model design for kids

🧱 The modern LEGO brick's stud-and-tube clutch design was patented in 1958 — that's why builds hold together so well!

🧑‍🎨 Official LEGO instructions usually use pictures instead of words so builders around the world can follow them.

🎨 The largest LEGO set by piece count (as of 2021) is the LEGO Art "World Map" with 11,695 pieces — perfect for practicing sorting!

🧪 LEGO bricks have been made mainly from ABS plastic since the 1960s, giving them their bright colors and durability.

💡 Fans can submit ideas on LEGO Ideas — community-supported projects can become official LEGO sets.

How do I design and build my own LEGO® kit?

Start by imagining a model and sketching a simple plan, then sort and count bricks by color and type to see what you have. Build a prototype, note any tricky steps, and take photos of each stage. Create step‑by‑step instructions using photos or drawings, design box art and a parts list, pack bricks into labeled bags, then assemble the kit yourself to test and revise.

What materials do I need to create a LEGO® kit?

You'll need a mixed collection of LEGO® bricks and at least one baseplate, plus small trays or cups for sorting. Have paper and pencils for sketches, a camera or phone for step photos, sticky notes or labels, clear bags or a small box for the parts list, tape and markers for box art, and optional tools like a tablet with a building app or a ruler for scale.

What ages is designing a LEGO® kit suitable for?

Designing a LEGO® kit suits children roughly 5–12 years old. Ages 5–7 benefit from adult help with sorting and safe cutting; 8–12 can plan, build, and write simple instructions independently. Teens can use digital tools and more complex engineering ideas. Always supervise younger children because small pieces are choking hazards, and adapt tasks—like drawing or sorting—for preschoolers to include them safely.

What are the benefits of designing my own LEGO® kit?

Designing a LEGO® kit boosts creativity, spatial reasoning, and planning skills. It strengthens fine motor control, sequencing and problem‑solving, and introduces basic design and engineering concepts. Writing instructions improves communication and attention to detail, while packaging and box art encourage storytelling and presentation skills. Working together builds teamwork and confidence as children see a plan become a finished, testable model.

Ready to create?

All Activities

Design your own lego® kit

Design and build your own LEGO® kit: plan a model, sort bricks, create instructions and box art, then assemble and test your finished design.

Table of contents

Step-by-step guide to design and build your own LEGO kit

0:00/0:00

Here at SafeTube, we're on a mission to create a safer and more delightful internet. 😊

How to Make a LEGO Modular Building

What you need

Lego bricks, paper, pencil, colouring materials, small box or zip bag, tape or glue, ruler, scissors, adult supervision required

Step 1

Gather all your LEGO bricks and the paper and pencils in one tidy workspace.

Step 2

Choose a fun theme for your LEGO kit like a race car castle or space rover.

Step 3

Give your kit a catchy name that matches your theme.

Step 4

Sketch a simple plan of your model on paper showing how it should look.

Step 5

Sort the LEGO bricks you need by color and type into small piles or cups.

Step 6

Build a first prototype using your sketch as a guide.

Step 7

Test the prototype by checking its stability and any moving parts.

Step 8

Pick one clear improvement to make based on your test.

Step 9

Make that improvement to your prototype to make it stronger or cooler.

Step 10

Count each brick you used and write a parts list with quantities.

Step 11

Create step-by-step building instructions by drawing or writing each build step in order.

Step 12

Design box art by drawing the finished model and writing the kit name and a short description.

Step 13

Put the counted bricks into the box or bag and add your instructions and box art to make the kit.

Step 14

Share your finished creation on DIY.org

Help!?

What can we use if we don't have enough LEGO bricks or small cups for sorting?

My prototype keeps falling apart when I test stability—what should I try?

How can I adapt this kit activity for different age groups?

How can we make the finished kit more exciting or personal?

Watch videos on how to design and build your own LEGO kit

0:00/0:00

Here at SafeTube, we're on a mission to create a safer and more delightful internet. 😊

Create YOUR OWN Lego Sets! | BrickLink Studio

3 Videos

Facts about LEGO building and model design for kids

🧱 The modern LEGO brick's stud-and-tube clutch design was patented in 1958 — that's why builds hold together so well!

🧑‍🎨 Official LEGO instructions usually use pictures instead of words so builders around the world can follow them.

🎨 The largest LEGO set by piece count (as of 2021) is the LEGO Art "World Map" with 11,695 pieces — perfect for practicing sorting!

🧪 LEGO bricks have been made mainly from ABS plastic since the 1960s, giving them their bright colors and durability.

💡 Fans can submit ideas on LEGO Ideas — community-supported projects can become official LEGO sets.