I used to generate the four mothers used to calculate a geomantic chart using dried beans drawn randomly from a bag. Cattan mentions this method as being used by high-class prostitutes in Bologna to generate charts, which gave me a naughty giggle. I of course couldn't resist trying it myself.
This takes a long time however. I do so many charts every week that I caved and started using four colour coded six-sided dice, converting the odd and even numbers appropriately. I longed for special geomantic dice with dots and even considered making some but never got around to it.
The wait is over, it seems!
Some enterprising fellow from http://www.divinersdice.com posted about these on the Geomantic Campus forum and I am just gagging to give them a whirl. $25 gets you the set. $10 for a single.
divinersdice.com have got back to me and after a short delay, they have confirmed that they are open for business and taking orders. They temporarily have sold out of the sets of 4 colour coded dice, but still have the single dice available. Rest assured they will be manufacturing more of the sets and lucky for me they reserved one remaining set for me! Thanks divinersdice.com! :-)