Solve a problem with design
Design and build a simple solution to a daily problem using cardboard, tape, and household items; prototype, test, and improve your idea.
About this activity
Design and build a simple solution to a daily problem using cardboard, tape, and household items; prototype, test, and improve your idea.
What you need
Step by step
- 1
Step 1
Pick one daily problem at home you want to fix like a messy desk a loose toothbrush holder or a toy that keeps falling over
- 2
Step 2
Write one sentence describing who will use your solution and what the solution must do
- 3
Step 3
Draw three quick idea sketches on scrap paper showing different ways to solve the problem
- 4
Step 4
Choose the single sketch you like best for your first build
- 5
Step 5
Make a short list of the cardboard shapes and small items you will need for your prototype
- 6
Step 6
Cut the cardboard pieces you listed using scissors and a ruler with adult help if needed
- 7
Step 7
Build your prototype by taping or gluing the cardboard pieces and adding the small items
- 8
Step 8
Test your prototype in the real situation for one minute and watch how it performs
- 9
Step 9
Write down one thing that worked well during the test
- 10
Step 10
Write down one specific thing that did not work and one change you will make to fix it
- 11
Step 11
Make that one improvement to your prototype and test it again to see if it works better
- 12
Step 12
Take pictures or a short description and share your finished creation on DIY.org
Fun facts
How do we design and build a simple cardboard prototype to solve a daily problem?
To design and build a simple cardboard solution, start by picking one daily problem (like loose socks, toy storage, or a phone stand). Brainstorm quick ideas and sketch the simplest one. Gather cardboard, tape, scissors and household parts, then make a low-fidelity prototype: cut, fold, tape, and combine items. Test it in real use, note failures, make small changes, and repeat until it works. Keep iterations fast and encourage kids to explain improvements.
What materials do I need to design and build a cardboard solution at home?
You’ll need cardboard (boxes or cereal boxes), masking or duct tape, scissors and/or a craft knife (adult use only), a ruler, pencil or marker, glue, string, rubber bands, clothespins and recycled bits like bottle caps or yogurt lids. Optional: hot glue gun, paint and stickers for decorating. Choose safe tools and keep an adult nearby when cutting. Use household scraps to save money and spark creative reuse.
What ages is this build-and-prototype activity suitable for?
This activity suits a wide range: ages 4–6 enjoy simple builds with heavy adult help for cutting and design choices; ages 7–10 can plan, cut with safety scissors, and test prototypes mostly independently; ages 11+ can tackle more complex engineering, use craft knives with supervision, and iterate designs. Adjust task difficulty, provide templates for younger kids, and increase challenge for older children by introducing constraints like time limits or size/weight rules.
What are the benefits of this cardboard prototyping activity for kids?
Making cardboard prototypes builds creativity, problem-solving, and engineering thinking. Kids learn to plan, test, and iterate, strengthening resilience and confidence. The activity improves fine motor skills, measurement, and spatial reasoning while encouraging teamwork and communication when done in groups. Low-cost and eco-friendly, it teaches reuse and resourcefulness. To vary the challenge, add themes, limited materials, or speed rounds to practice rapid prototyping and creative constraint
Watch & Learn
Need help?
What can we use if we don't have cardboard, scissors, or glue from the materials list?
Use cereal boxes or poster board instead of cardboard, a butter knife or tearing by hand with adult help instead of scissors, and clear tape, a stapler, or a glue stick rather than liquid glue when you cut and assemble the prototype.
My prototype keeps falling over during the one-minute test—what can I try to fix it?
If the prototype tips during the one-minute test, make a wider cardboard base, lower the center of gravity by placing small items closer to the base, and reinforce the joints from step 6 with extra tape or hot glue for more stability.
How should I change the activity for younger kids or older kids?
For younger children simplify by picking an easy problem, using pre-cut cardboard shapes and tape for steps 5–6, while older kids can add precise measurements, stronger adhesives, and keep a redesign log recording tests from steps 8–11.
How can we extend or personalize the project after improving the prototype?
Decorate and personalize the improved prototype from step 11 with paint or stickers, add moving parts like hinges or rubber-band mechanisms, take before/after photos, and share the short description and pictures on DIY.org.