Salt and vinegar crystals are easy-to-grow non-toxic crystals that you can grow in a rainbow of colors. This crystal growing project is especially good for kids or beginners looking for quick and easy crystals.
Copper sulfate crystals are among the easiest and most beautiful crystals that you can grow. The brilliant blue crystals can be grown relatively quickly and can become quite large. Here's how you can grow copper sulfate crystals yourself.
OK you guys, I think I've fallen in love with another kids activity. These crystal stars are awesome! Any activity where I get to make something beautiful from bright rainbow colours, and I'm totally on board!
This project uses hot tap water, not boiling water, so it's safer for young crystal growers. Place the crystal solution in the refrigerator and get sparkly needle-like crystals within a few minutes to a few hours. It's that easy! 1/2 cup Epsom salt 1/2 cup hot tap water food coloring (optional) instructions here: http://chemistry.about.com/od/crystalrecipes/ht/cupofcrystals.htm