I had never heard the term before.
There all very Gees Bend-like. Which makes sense as you're using fabric from real life.
http://www.google.com/search?q=passa...ls=org.mozilla:en-US:official&prmd=ivns&source=lnms&tbm=isch&ei=euseTsnNB-rm0QGGtKWsAw&sa=X&oi=mode_link&ct=mode&cd=2&ved=0CEYQ_AUoAQ&biw=1280&bih=640
There's even a for-profit site that makes them, which is fine.
Sorry, not much help. I'm sitting here trying to think how you make such a personal quilt without knowing the person. Or is it like charity quilts? Very general in nature?
And sorry to be crass but are they reused - or do they go the family?
What do the two that your HH already have look like?
eta :
I was thinking perhaps by color/genre also - in some cases the patient will choose, and in others a family member will make the choice. I don't think the complexity of the blocks themselves are as important as the tone of the quilt - soft Moda florals/Kaffe brights/etc.