OBW = One Block Wonder - made entirely of 1 fabric with large designs and many colors giving a kaleidoscope effect but really pretty - technique is much like Stack and Whack
Stack and Whack = a type of kaleidoscope quilt made by using a repeating pattern fabric and fussy cutting a minimum of 6 identical triangles and then positioning them with the same centers. You have to pin the fabric together exactly matching each pattern and it requires a minimum of 6 layers of the same repeating pattern.