Lego Water Play Sensory Activity Ideas
Washing Legos for Sensory Fun-
Did you know Legos are dishwasher safe? Yes, they can go through a sanitize setting with no problems. Don’t ask why I wanted to find THAT out. During a recent room cleaning when it became apparent that we needed to “deep clean” some of the Legos we sent a few pieces through the dish washer…
Then, just to see what would happen with the kids, I decided to dump the rest in the sink with some water and dish soap and let them wash their Legos. Well guess what- Legos are yet another thing your can just-add-water to, to increase the fun.
**edited to add – upon further research I discovered that the Lego website does not recommend high temperature washing, so in the future I would not use the dishwasher method. However, washing in the sink is just fine.
Lego Sensory Play in Water
This was simple and engaging sensory activity for my boys. For some reason the Legos that had been causing fighting and angst only moments before became fun and easy to share once they went into a bubbly sink.
The blocks feel really interesting to swish your hands through!
When the kids eventually got done playing we rinsed out Legos and made a big pile of them on a towel to dry. I was a little grossed out about how dirty the Lego wash water had become. This was an unusual Lego play idea for us, but maybe we should do it again sometimes- those things were grimy!
Here are some more ideas for Lego Water Play:
Legos + Water Table – If you have a water table, try adding Legos or Duplos as part of your water play. They can make interesting waterfall structures, bridges or islands.
Lego Boats – Of course you can get Lego sets with actual Lego boats in them, but it can also be fun to make your own and see what makes them float and what makes them sink.
Lego Water Wheel – You can find instructions on Frugal Fun for Boys and Girls for how to make a water wheel and a cool water course with legos.
Lego Dams – These dams on Little Bins for Little Hands tap into our endless curiosity for how water moves and how it can make other things move.
For more sensory ideas check out these posts:
- Printable Sensory Activity List – great list if you have a kiddo with sensory integration needs
- Best Sensory Swings for Home – we love having a swing inside for relaxing
- Sensory Activities for Focus – Helping kids get calm and focused with sensory play

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We just threw them in the bathtub and got in with them – LOVED it!!! Thank you for the idea!
Glad you had fun – I love when something so simple works well.
I am so glad to have found your blog..simple yet amazing ideas:)
This is a great idea! My boys are doing it right now with their duplo blocks. Legos are on tomorrows agenda. Another idea that just came to me is to pour all the clean duplo blocks into the bathtub with them tonite. The legos I think would be too small and probably hurt when they sat on them, but the duplos should be perfect! Thanks for a fun and productive idea!
This is really cool. My boys love Legos, and they love water play. Combine the two and WIN! Sharing on my FB.
This is a wonderful way to play and clean them at the same time.
My mom has been doing this with my little one when she babysits and they also use her magnetic letters. I’ll have to show her this. Too cute!
Great idea! With 3 little guys here I am getting tired of stepping on legos all the time!
I know! The other day I found my one year old actually walking back and forth in the Lego bin- OUCH! I thought, ‘Now that’s an activity that parents have NO desire to do.”
Now this looks like fun! Sharing 🙂
We’ve done this before and my little one loved it! Thanks for the great reminder that Legos in water are a lot of fun!!