Knock Knock Box
Grow your own crystals!
Use this Crystal Growing Kit to grow seven crystals in different sizes and colors. Kiddos will follow along with the detailed, step-by-step instructions to create the liquid that the crystals will grow from. Watch as the dissolved particles join and solidify in an ordered way to form crystals up to 1" in size.
We particularly love that the kit comes with a display case for each crystal!
Recommended for ages 10 and up! Some slightly younger kiddos will enjoy, too, with adult supervision.