I love rainsticks and these are super easy using coiled aluminum foil inside the tube.
:: How to Make Rainsticks
IMPORTANT: Please be sure to super glue the lid down so little ones can't open the jar.
:: How to set up Rainbow Bath
Awesome, awesome kids activity tables using lights.
This site has tons of ideas for light table and items to light up.
Here is an inexpensive way to make liquid watercolors. Such a great idea and kids can use their imagination with them.
I love fun learning activities for kids and I really love the idea of activity boxes for kids. Here are ideas of what to put in the boxes and links to other sites with these boxes.