~ glow stick xylophone ~put the glow sticks in cups of water and an aura comes off in the dark, when you tap them ~ probably the coolest thing ever ~ this would be a fun activity for our first grade SOUND unit ~
Didn't work the best Borax crystal shapes. Dissolve cup borax in jar filled with boiling water. Hang pipe cleaner shapes suspended from popsicle sticks. Let sit overnight. Can add food color to borax solution.