Looking for a fun and sensory craft that kids (and even adults) will love? This DIY Moon Sand Stress Ball is the perfect mix of calming, squishy, and just plain cool! It’s a great project for a rainy day, a summer camp activity, or a boredom buster. Plus, it’s easy to make with just a few supplies you already have at home.
Let’s dive into this fun tutorial!
What You’ll Need
- 1 cup flour
- 1/4 cup baby oil (or vegetable oil)
- Bowl and spoon for mixing
- Balloon (thicker ones work best)
- Funnel (or a DIY paper funnel)
- Scissors
- Optional: Essential oils or food coloring (for scent and color)

Step-by-Step Instructions
Step 1: Make the Moon Sand
In a recent post, I shared the full tutorial of moon sand. You can check it here.
Step 2: Prep the Balloon
Stretch out your balloon by blowing it up and letting the air out a few times. This makes it easier to fill.
Step 3: Fill the Balloon
Place the funnel in the balloon opening. I didn’t have funnel so I used bottle mouth to fill the balloon.

Slowly spoon your moon sand into the balloon. You might need to shake or gently squeeze the balloon to help the sand settle.

Step 4: Tie It Up
Once your balloon is filled to your liking (don’t overfill!), carefully tie a knot at the end. You can also double-layer it with another balloon for extra durability.

Step 5: Play and Squish!
Your DIY moon sand stress ball is ready to go! Give it a squeeze, squish, or roll — it’s incredibly satisfying and perfect for calming nerves or just having fun.

Why Kids Love It
- It’s squishy, soft, and calming.
- Offers sensory play benefits for kids.
- Great for developing fine motor skills.
- Easy and safe to make at home!

Clean-Up Tip
If your balloon ever breaks, moon sand is easy to clean up — just sweep or vacuum. But double layering the balloon can help prevent any messes in the first place.
Final Thoughts
This DIY moon sand stress ball is an awesome at-home activity for kids of all ages. Whether you’re looking for a summer boredom buster, a calming tool for anxious hands, or a fun science-meets-sensory craft, this project checks all the boxes.