Thanks to all for the encouragement. I only have 5 families now, and want to limit the number to 8 due to the space, but I hope to have multiple groups and also offer classes for 18 months on up.

I am LOVING some of these ideas from Kids-Music-Experience, found here:
Kids Music Experience

Check out "What's That You Say" and "Tap Your Sticks".

OMG - I love the What's that you Say!!! That is too funny! I'm gonna try that one out for sure!

Not sure how I missed this until recently, but I have been enjoying Mark Turner's website and FREE materials online at ARTS AS CONTEXT.

In a few classes this week we explored different ways to balance our bodies, using one of his instrumental tunes. It was a wonderful sight seeing a roomful of children ages 3-4 moving carefully about the room, balancing and freezing, to a funky mixolydian melody (with a #4) in 5/4! I highly recommend his work to any EC music professional. Go to "PRODUCTS" to download a 136-page PDF, and also to download the MP3s.

"RESOURCES", "MUSICA BELLA", and "SIDNELL LECTURES" also contain PDFs to read.