How to make a Hinna-kami*1:
1. Collect some soil of seven cemeteries from seven different villages*2.
2. Mix the soil with human blood and mould it into the shape of a god you believe in.
3. Bury the doll in a busy street and let one thousand people step over it*3.
4. If you then worship the doll, it will bring to you whatever your heart desires.
But before you proceed with this ritual, remember that Hinna-kami will haunt you for the rest of your life, and in the end you will die a horrible, painful death. It might even still be possessing your soul after you die, so that it can take your soul to hell.
Other sources say:
人形神(Hinna-kami, Hinna-gami or the doll -god) is a name given to a type of possessive spirit, famous around Toyama Prefecture. In those areas, when a family suddenly becomes wealthy, people whisper behind their back that they must be worshiping a Hinna-kami.
You can also make a Hinna-kami by the following method:
Make one thousand dolls, each one measuring 9 cm tall, and boil them in a pan.
You will see only one out of the one thousand dolls will float up to the surface.
The one that floats up is called "Kochobo" and it traps one thousand spirits within it.
If you then worship it, it will bring to you whatever you want.
When you are not giving any commands to it, it comes to you of its own accord demanding 'What's next?What's next?' So that is why the family that worships a Hinna-kami tends to suddenly become wealthy.
*1 "kami" means "a god" in Japanese.
*2 Another source says you make the doll out of gravestone.
*3 Another source says "three thousand people for three years."