How To Make Jelly Cube Slime Easy Slime With Squishy Cubes

There’s just something about this slime that’s completely irresistible — it’s the kind of recipe you’ll find yourself making again and again. Whether you’re mixing it up for a slime party, a rainy day activity, or just because it looks awesome, jelly cube slime is the kind of DIY fun that never gets old!

Helpful Tips:

What type of sponge do I need to make jelly cubes for slime?

We recommend using melamine sponges (like Magic Erasers) because they have a smooth, satisfying texture and soak up slime really well. You can buy a generic brand at the dollar store or online for much less money than the name brand sponges. A regular kitchen sponge will work in a pinch, but it may feel coarser and won’t give the same smooth squish.

What slime activator works best for jelly cube slime?

We like using contact lens solution and baking soda. It’s easy, safe, and gives a great stretchy consistency. Just be sure your contact solution contains boric acid and sodium borate to activate the slime. You can also use borax powder dissolved in water (about 1 teaspoon borax per 1 cup of warm water). If you go this route, you don’t need to add baking soda.

How do you store jelly cube slime?

Store your slime in an airtight container or zip-top bag to keep it from drying out.

How long does jelly cube slime last?

If you store your DIY jelly cube slime in an airtight container and play with clean hands, it should last for at least a few weeks. Over time, the texture of the slime may change slightly. As the slime gets absorbed into the sponge cubes it can become a bit more rubbery. However, the longer the slime sits the more the cubes will pop! If needed, you can refresh the slime by kneading in a little more clear glue or adding a splash of water. If the jelly cube slime starts to smell or change in appearance, throw out the slime and make a fresh batch. Jelly cube slime is such a fun twist on classic slime — and once you try it, you’ll see why it’s a favourite! The combination of glossy stretch and sponge-filled texture makes it incredibly satisfying to play with, whether you’re squishing the cubes, poking the surface, or just watching it ooze between your fingers. It’s a great sensory activity for kids, tweens, and teens, and a fun way to get creative with just a few simple ingredients.