A person read my post, Magic Trees and Burdocks and kindly emailed me a link to a site that's absolutely full to bursting with crystal growth formulas. Not only does the site have formulas and techniques but it also lists online source and has areviews of commercial kits. For the christmas season you could even use the sites plans to grow a snowflake!
When you're done perusing the crystal site go to the homepage of Wayne's This and That. This Wayne Schmidt fellow is one one gloriously curious man. Want jokes? Tips on eating chocolate? Soil testing kit reviews? Instructions on making a kaleidoscope? Recipe for the best vanilla pudding? An Etch-A-Sketch autopsy report?
It's all there!
When you've got a free hour or two grab a coffee and go through his site. It's a treasure trove and you'll be absolutely delighted with all the stuff he's got there.
And thank you Victor for letting me know about the site!