I found a neat pattern called Double Dutch Rose:
http://piecebynumber.com/Sq/sqintro.htm
Here is the traditional Dutch Rose with some color options:
http://equiltblocks.com/cgi-bin/bloc...&path=./other/
And Carpenter's Wheel from the same site as above with some color options:
http://equiltblocks.com/cgi-bin/bloc...&path=./other/