https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Those are the ones I picked up. I figure I can mess around with those Handibot steppers, and also I have a set of three of these:

https://hobbycnc.com/product/305-oz-...er-motor-copy/

That's from a VERY old Hobby CNC build I did back in the day. If I'm understanding things right, to use those I'll have to wire the phases in series...