fascinated by crystals - resources ?

[mom2moon2]

My 7 yo boy (1st grade) is fascinated by crystals lately.

Any resources/kits to make different kinds of crystals ?

[Hoggirl]

I have seen such a kit at Hobby Lobby before.

[myfatherslily]

PMing you...

[WTMindy]

We have done several kits that we found at different stores. They are very fun.

[Ellie]

Look for Mrs. Stewart's Bluing in your grocery store where the other laundry products are. There's a very nifty recipe to make a "crystal garden."