This Instructable is another cool way to substitute for a standard 6-sided die, and reminded me of the extremely geeky method we use. A great teaching tool for kids, too.
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Signing UpStep 1Acquire Coins
Coins are readily available.
Just find three visually distinct coins: I've got a dime, nickel, and penny here, but you could mark up three of the same coins with a Sharpie to distinguish them if necessary.
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I saw the other one yesterday morning, and was reminded of this trick. I don't think there's a secret Illuminati dice plot.
Repeat - The goose has left the nest.
"The eagle has left the nest."
*khhhkht* "Roger that, eagle has left the nest, alert the agents." *khhhkht*
"Will you stop that?"
I'm NOT a geek!
=P
20 in binary is:
10100
So just use 5 dice then.
You could simulate a d100 if you really wanted with 7 dice.
64 32 16 8 4 2 1
1 1 0 0 1 0 0