Easy Bath Time Sensory Activity
This sensory activity is great for toddlers and kids alike. Made from similar ingredients to homemade bath bombs, this play foam expands and can be molded to play with all before you drop it into the bath and watch it fizz.
The origin of this sensory activity is the most random and mildly entertaining thing I’ve done in a while (read about it below) and I’m still trying to figure out the best ways to describe this “foam”.
Regardless of what you want to call it, my girls were obsessed with it and it did make one hell of a sensory activity. Plus, it gave them something to do during bath time that wasn’t fighting with each other so win.
Don’t want to read? JUMP to the recipe.
How This Sensory Activity Was Made
I didn’t set out to make a sensory activity, I set out to make milk and honey bath bombs for my new DIY eBook. I have made a zillion homemade bath bombs and haven’t had a problem with them in years.
But somewhere along the way, the milk and honey cause a reaction.
I noticed it first when adding the liquid ingredients to the dry ingredients the amount of fizz. All I could think was “sh*t I ruined them”. I still put them into their molds though and for the next few hours watched as they exploded out of them. Literally.
Bath bombs are normally dry and crumble.
This combination was light, somewhat sticky and just kept growing.
The next day when I took them out of the molds it was a mess. But it was also fun (read more about the texture below).
So of course, I tried again, adjusting the amounts slightly. But the same thing happened.
The hubby kept joking that I had somehow made expansion foam as that’s what it best resembled.
And while it was a total screw up bath bomb wise, I knew it had to be something on the blog.
When To Make The Bath Time Sensory Activity
You’ll need to make this concoction the day you’ll be using it as that’s when it’s the most fun. By the second day, the mixture loses it’s “air” and is no longer light.
It gets harder. And while it still works to make into a ball and watch fizz, it isn’t as much fun to play with.
This sensory activity works for about a 6-hour time frame depending on how you want to play with it.
The Texture Of The Foam
When you initially whip together the bath time foam it’s very light. Almost like moon sand falling through your fingers but a bit stickier.
My girls loved playing with it and molding it into balls and shapes on the counter.
For a few hours, the mixture will continue to rise up. Meaning, if you squish it down in the bowl, it fluffs itself back up. It’s fun.
What About Water
This sensory activity can be used a few ways but make note that when it is run underwater or submerged, it does fizz and disintegrate just like a bath bomb (which my girls love!)
Having wet hands will make the mixture harder when you’re molding it or playing with it.
How To Use This Sensory Activity
We used this sensory activity in a couple of ways to get maximum use out of it:
- Playing on the counter with it initially when it is light and like sand
- Playing on the side of the tub with it when we were molding it into balls or mashing it into shapes
- Submerging it into the water to watch the fizz or crumbling it into the water as an “astronaut” explosion
Remember, the mixture works for only that day but there are multiple ways to play with it. Once it’s submerged in the water it will fizz up and be done.
If you’re looking for something to play with in the water that holds together, check out this bath time playdough from my friend.
Watch the video to get an idea of the texture and what to do with foam.
How Much Does It Make
This is a hard one to describe because at first, it makes about a cup and a half of moon sand like substance but then it foams and expands and the mixture doubles.
You don’t need to use the entire mixture if you don’t want to. We still have some in a bowl that has hardened and now we just use it in the bath as bath bombs/fizz makers.
Ingredients For The Expansion Foam
The ingredients in this sensory activity are all the same as bath bombs and thus they’re great for kids to soak in the tub with! The Epsom salts and baking soda are similar to a detox bath and help aches and pains but also promote calm.
On the second batch, I added mica powder to color the bombs (with the ingredients as is, they make a nice white and shimmer pink). This is optional but fun as kids love testing out different colors!
I also added some soothing essential oils to the mix. Again, completely optional but I like to give a bit of calm at the end of the day.
Can I Sub Milk Powder For The Coconut?
Truthfully, I have no idea. I’m still trying to figure out what exactly made them bind this way. I have not tested them with regular milk powder so if you do- please leave a comment below!
This is out of my norm, I’m not a craft blogger but this sensory activity was too good not to post. However, I found it tricky to explain exactly what it is and what to do with it.
So, whip it up and use it however you like before finishing off watching it explode in the bath. My girls loved the texture!
Have a great use for it? Drop a comment below and let know what you enjoyed about it and how your kids got creative!
Ingredients In The Sensory Activity
- ½ cup baking soda
- 1/3 cup citric acid
- ¼ cup Himalayan salt
- ¼ cup cornstarch
- ¼ cup coconut milk powder
- 1 tsp mica powder (optional)
- 2 tbs honey
- 1 tbs witch hazel
- 15 drops essential oil (optional)
Don’t forget to Pin this awesome Sensory Activity!
Fizzy Foaming Moon Sand
A fun bath time sensory activity for toddlers and young kids. This foaming moon sand holds together and the fizzes in the water.
- 1/2 cup baking soda
- 1/3 cup citric acid
- 1/4 cup Himalyan salt
- 1/4 cup cornstarch
- 1/4 cup coconut milk powder
- 2 tbs honey
- 1 tbs witch hazel
- 1 tsp mica powder optional
- 15 drops essential oils optional
In a large bowl, combine the first six ingredients. In a small bowl combine the liquids.
Pour liquids into dry ingredients and mix well.
Use immediately to play- similar to moon sand. Will dissolve immediately in water
Cover and let sit for four hours on the counter. It will expand immensely. Play dry or on side of the tub.
It’s slightly sticky, can be rolled and molded. It can be broken apart.
Gets hard when left on the counter but can still be squeezed. Takes longer to dissolve in bath.