I use tuning forks to tune my guitar & I don't find them practical to use with babies. I have to hit them against something hard to get them resonate then touch them to my guitar which amplifies the sound. To hear it without the guitar it needs to be within an inch of the ear. Babies wiggle and touch the tuning fork which stops the sound, but it is good for a giggle. I also didn't like the idea of my kids playing with them, they just seem dangerous.
I really wanted something my kids could play with that was indestructible so I got the glockentoddler
http://www.amazon.com/Sounds-Like-Fun-SLF-10005-Glockentoddler/dp/B000KRVD2M/ref=sr_1_7?ie=UTF8&s=baby-products&qid=1239241451&sr=8-7Product FeaturesPerfectly tuned
Musically correct
Brightly colored
Great musical introduction
Age: 12 months and older
The mallet is all one piece so not a choking hazard. So far it has lasted much longer than a lot of toys do around here, and is in much better shape than the hardwood floor (my son likes to throw it & listen to the sound it makes.) I show my kids how to play it & sing the pitches as I am playing. It has been a month since I got it & I haven’t decided if I am happy with the purchase yet. My kids can’t play it yet, if they learn I will be thrilled. My daughter actually made a good attempt at playing it today.
I have also been happy with playing the computer games from the Soft Mozart website.