Science for Kids: Overnight Crystal Garden - Babble Dabble Do (uses epsom salts) Lots of great science experiments
Crystal Egg Geodes - blown-out eggshells with alum powder crystals (Martha Stewart)
Experimento infantil: ¡pompas de hielo!
Homeschooling science project: make it rain in a jar. great for teaching weather or water cycle. wonder what happens if you use salt water or put in a "pollutant"? Nature lore on weather
Ice bubbles, WTF Fun Facts - We are so doing this this winter when it gets below 32 degrees.I'll have six months of ice bubble blowing!