Since you are trying to create a 256 bit number typically represented as either Hex or base58, wouldn't it be more efficient to use either:
sixty-four 16-sided dice, or eighty-six 8-sided dice, or one hundred twenty-eight 4-sided dice?
Or a single standard deck of cards.
I know we've discussed this before (I even considered including it with my dice suggestions), but I can't seem to remember the method of converting card suits and values to a 256 bit value.
Was it just to list out all the card names and numbers and then take SHA256 of the list? Or was there some way of assigning bit values to the cards? I left it out of my suggestion, because I couldn't remember how to do it.