Make Your Own Crystal Growing Experiment at Home Looking for a hands-on science craft that feels like real magic? This Crystal Growing Experiment is bright, sparkly, and perfect for curious kids. With just a few simple ingredients, you can grow dazzling crystals overnight in any shape you choose. Ingredients (makes one crystal jar): Borax – ½ cup to grow the crystals Boiling water – 2 cups to dissolve the Borax Glass jar – one for each color Pipe cleaners – shape into stars, hearts, snowflakes,