You could use the second fabric as a panel and cut out one repeat to make the center block of a quilt. See some examples here:
http://www.allpeoplequilt.com/quilt-...quilt-projects
More instructions are on this website:
http://www.ehow.com/how_5901038_desi...ng-panels.html
Robert Kaufman has a free pattern to give you some more ideas:
http://www.robertkaufman.com/quiltin...perhero_Quilt/