Watch out PJ Masks, the Night Ninja is about to launch his Sticky Splat Slime and things are going to get messy!

Make Your Own Sticky Splat Slime

Kids love making slime! And kids love PJ Masks. So here’s a fun activity that combines the two – making Night Ninja Sticky Splat Slime. It’s perfect fun for a PJ Mask party, or just a cool activity to do with the kids after school.

This slime recipe is pretty much fool-proof. I’ve made it with hundreds of kids, and it has never once failed. You can even package up your slime in a bag with these free Sticky Splat Slime labels. Keep it in an airtight ziplock bag, and it’ll be good to play with again and again.


  • 3/4 cup cold water
  • 1 cup PVA glue (Elmers Glue)
  • 1/2 cup hot water
  • 1 tsp Borax (a powder substance available in the laundry aisle – I found some at my local hardware store Bunnings)
  • Liquid food colouring


  • One small mixing bowl, and one large bowl
  • Two spoons (plastic is fine)

How to make slime


  • In the smaller bowl, mix the cold water, glue and food colouring. 6-10 drops will create a nice bright colour.
  • In the larger bowl, mix hot water and borax until the powder has dissolved.
  • Slowly add the glue mix to the borax mix.
  • Mix well until the slime comes together.
  • Start playing!

Find out how to run an awesome PJ Mask party with the PJ Mask Party Kit. 

PJ Mask Party Kit

Here’s some fun things you can do with your slime:

  • Squish it between your fingers
  • Squash it flat on a plastic tray and poke and punch it
  • Roll it into a ball and bounce it
  • Bury your toys in it
  • Make slime shapes using an ice cube tray
  • Add water to make a slime bath
  • Throw it ONLY if a parent says that’s OK!

When the slime has been handled for a while, it will get more brittle and break apart. To bring it back together, place it in a bowl and let it rest. It will smooth back together within 10 minutes.

Sticky splat slime

Have fun!

See lots more PJ Mask party ideas here.


Download your Sticky Splat Slime labels here

Want more PJ Mask printables, plus hear exactly how I run my own PJ Mask parties? Check out the PJ Mask Party Kit. 

PJ Mask Party Kit

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Night Ninja sticky splat slime

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