Teaching Idioms? I know I'm preaching to the choir when I say that idioms are more fun than a barrel of monkeys. There is a boatload of idioms at GoEnglish.com. Beyond going over the literal meaning of such phrases as "It's raining cats and dogs!" there are many other out-of-this-world things to try. They are the cat's pajamas, so give them a whirl!
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.