Here's one:
http://www.quiltingboard.com/picture...h-t223757.html.
There was a thread about this type of design a few months back. I followed a link and it seems it's really popular in Eastern Europe. Sorry, I can't find the thread.
bkay
Edit: Found it! They're called
optical illusion quilts.
Last edited by bkay; 04-29-2017 at 03:43 PM.