Halloween Slime

Halloween is one of our favorite holidays. It’s actually something our toddler is really excited for this year (because….candy!). But he also gets excited for all the pumpkins, halloween decorations and fun costumes. We know the candy can be overwhelming for some kids to receive so today we’re sharing a non-candy Halloween treat idea with this Halloween slime. You can make a large batch of one kind or make them all! Either way, kids will love receiving these adorable Halloween slime jars.

Halloween Slime

We made pumpkin mason jars a few years ago and they’ve been a huge hit.  That’s why we thought – why couldn’t we make pumpkin slime jars?! Such a fun idea to fill the color of the mason jar with the slime! And if you’re not the best with felt, you could stick to just making the ghost slime jar. We love easy! But how can you resist that Frankenstein jar? It may be the cutest Halloween craft we’ve ever seen.

Cute Halloween Slime Jars

Halloween Slime – an Easy Slime Activity!

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Now meet our 3 Halloween Slime Jars that we’ll walk you through how to make.

First is our pumpkin slime jar – made with orange slime inside and black felt for the facial features!

Pumpkin Slime Jar

Next is our Frankenstein slime jar – this guy is seriously the cutest! He may be our favorite mason jar craft yet! (And we’re pretty partial to these Trolls mason jars if you haven’t seen them).

And finally (the easiest one!) a simple ghost slime jar.

Here are the three slime colors we made stretched out for you to see them.

Halloween Colored Slime

Now let’s get into the details on how to make this Halloween slime!

Ingredients Needed to Make Halloween Slime

Repeat each of the below for each color (you’ll need to make 1 batch each if you want to make each slime jar)

Per batch: 

  • 1 bottle of Elmer’s glue (6 oz) – we used white (2 bottles) and glitter green and repeated the recipe 3 times. Note: we made this with Elmer’s glue. It is recommended you do not substitute with other glue as the make-up may not be the same and the recipe may not work (especially Dollar store glue many people report having problems using this).
  • Orange food coloring for the pumpkin slime jar *Note: the food coloring may stain, use wax paper to cover your table when playing with it and avoid contact with anything you do not want stained.
  • 1/2 TBSP of Baking Soda
  • 1½ TBSP of Contact lens solution. **Important: your brand of contact lens solution must have boric acid in the ingredient list. This is what interacts with the glue to form the slime.
  • Optional: add 1 TBSP of water to your glue before adding baking soda if you’d like a stretchier slime

Supplies for the Mason Jar Features

Googly Eyes

Black Felt

Glue Dots or Hot Glue (we suggest adults do the hot glue portion)

Halloween Slime for Kids

Directions to make Halloween Slime

1. Get a bowl to mix your slime ingredients in.

2. Pour 6 oz of your Elmer’s glue into the bowl. Use white glue for the ghost and pumpkin slime.

White Glue for Slime

3. Use your green glitter glue for your Frankenstein slime. You could also substitute the green glitter glue for white glue with green food coloring. You can save on glue by getting the large gallon size if you plan on making a large batch.

Green Glue for Slime

4. Mix in orange food coloring to make orange glue for your pumpkin slime. *Note: the food coloring may stain, use wax paper to cover your table when playing with it and avoid contact with anything you do not want stained.

Orange Colored Glue

5. Add your 1/2 TBSP of baking soda and mix in thoroughly. Also add 1 TBSP of water here if you want a stretchier slime.

Add Baking Soda

6. Now add in your contact lens solution. We recommend adults do this part. Reminder: your contact lens solution should contain boric acid or your slime will not form. Start with half of what the recipe calls for and mix. If your slime is not forming enough, add in the rest. If you find it is still too sticky you can add a bit more.

Add Contact Lens Solution

7.  Now mix until your slime forms and begins to harden. Knead for quite some time with your hands. You may be surprised how much you need to knead to really make the slime form. If it’s not the desirable consistency keep kneading. If you find it to still be too sticky, add a bit more contact lens solution.

8. Now add your facial features to your mason jars! We used googly eyes for the ghost slime jar. We cut out a pumpkin face with black felt for the pumpkin jars. And we used black felt and googly eyes for the Frankenstein jars. Glue to your mason jars using hot glue (adults only) or glue dots for the googly eyes.

Frankensteine Hair

This recipe was adapted from our Unicorn Slime recipe.

Pumpkin Slime for Halloween

Now you can play! Give these as gifts or simply have the kids play with their Halloween slime! These would also be perfect for a Halloween party. Then seal up the jars when you’re done for safe keeping and storage.

Halloween Slime Jars

Halloween Slime

Halloween Slime

Ingredients

  • -1 bottle of Elmer’s glue (6 oz) – we used white (2 bottles) and glitter green and repeated the recipe 3 times. Note: we made this with Elmer’s glue. It is recommended you do not substitute with other glue as the make-up may not be the same and the recipe may not work (especially Dollar store glue many people report having problems using this).
  • -Orange food coloring for the pumpkin slime jar
  • -1/2 TBSP of Baking Soda
  • -1½ TBSP of Contact lens solution. **Important: your brand of contact lens solution must have boric acid in the ingredient list. This is what interacts with the glue to form the slime.
  • -Optional: add 1 TBSP of water to your glue before adding baking soda if you’d like a stretchier slime

Instructions

  1. Get a bowl to mix your slime ingredients in.
  2. Pour 6 oz of your Elmer’s glue into the bowl. Use white glue for the ghost and pumpkin slime.
  3. Use your green glitter glue for your Frankenstein slime.
  4. Mix in orange food coloring to make orange glue for your pumpkin slime.
  5. Add your 1/2 TBSP of baking soda and mix in thoroughly. Also add 1 TBSP of water here if you want a stretchier slime.
  6. Now add in your contact lens solution. We recommend adults do this part. Reminder: your contact lens solution should contain boric acid or your slime will not form. Start with half of what the recipe calls for and mix. If your slime is not forming enough, add in the rest. If you find it is still too sticky you can add a bit more.
  7. Now mix until your slime forms and begins to harden. Now knead with your hands. You may be surprised how much you need to knead to really make the slime form. If it’s not the desirable consistency keep kneading. If you find it to still be too sticky, add a bit more contact lens solution.
  8. Now add your facial features to your mason jars! We used googly eyes for the ghost slime jar. We cut out a pumpkin face with black felt for the pumpkin jars. And we used black felt and googly eyes for the frankenstein jars.
https://www.thebestideasforkids.com/halloween-slime/

Halloween Slime Kids Activity

Slime Safety & Precautions

Note: this recipe does not contain borax. However, it is still considered a science experiment and safety precautions should still be made when creating slime. By making this slime, you agree to our site terms which you can read here.

  • Adults should handle any chemicals and products
  • Adults should make the slime
  • Always read and follow the labels of products used. If contact lens solution is accidentally ingested, seek medical attention immediately.
  • This project is not suitable for children under 4.
  • Slime should not be placed in the mouth. After playing with the slime, you should thoroughly wash your hands

For more fun slime sensory play, try making this glittery Unicorn Slime.

Glitter Unicorn Slime

And for a fun Halloween craft idea that uses glue – these spider handprints are too cute! Kids will love tracing their hand and making the webs with glitter glue.

Spider Handprint Kids Craft

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7 thoughts on “Halloween Slime

  1. I have a class party I’m doing and have 30 kids. I’m needing to know how many baby jars this recipe will fill (if known)?

    1. You could probably fit one batch/recipe in two baby jars. This batch fits a small mason jar probably approximately double the size of a baby jar. Hope that helps!

  2. This looks like the perfect craft for a 1st grade class to do at their halloween party. We have 15 students in the class, do you know how many jars each batch makes?

    1. Hi Adina, it depends on your jar sizes. These are small jars but larger than baby food jars so 1 batch would fit. If you used baby food jars you may be able to split one batch into two jars. Hope that helps!

  3. Hello, I love this idea and I’m planning on doing it with my 4th graders. Where did you get the clear round Mason jars with lids? I need 30 of them. Thank you for your help.

    1. If you’re buying that many check the dollar store. We got ours at Michaels. Amazon also has some but make sure you find jars that are smooth on one side for you to add the face. 🙂

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