manual soymilk maker

[dayakara]

I've been looking for a soy milk / tofu maker that doesn't require electricity.  Does anyone know of any?  I figure there must be something like this out there somewhere since they've been making both products in Asia for quite a long while.

Everything I've seen online is electric, and I'm trying to avoid things that need to be plugged in.  Or perhaps there's a tutorial somewhere on the traditional method (?).

Thanks for any information or advice.