How to make slime

What can we use if we don't have contact lens solution or white glue?

If you don't have contact lens solution for the step that activates the slime, substitute 1 tablespoon of liquid starch or, with adult supervision, add small amounts of a borax solution (about 1/4 teaspoon borax dissolved in 1/2 cup warm water) while using PVA school glue in place of the 1/2 cup white glue.

My mixture won't pull away from the bowl or is too sticky—what should I do?

If the mixture doesn't pull away after adding 1 tablespoon of contact lens solution, add an extra 1/4 teaspoon of contact lens solution at a time and knead for the 2-minute kneading step until it stops sticking, and if it becomes too stiff soften it with a few drops of white glue.

How can I adapt this slime activity for different age groups?

For younger children, have an adult pre-measure the 1/2 cup glue, 1/2 teaspoon baking soda, and 1 tablespoon contact lens solution and let them do the stirring and kneading in a shallow tray, while older kids can vary activator amounts, try different color mixes, and measure how far the slime stretches and bounces after the kneading step.

How can we extend or personalize the slime after making it?

After you knead and test stretch and bounce, personalize the finished slime by folding in glitter, foam beads, or a drop of scented oil, try glow-in-the-dark paint for nighttime play, and preserve it in an airtight container before sharing on DIY.org.