I'd probably make something pretty random. Can't go wrong with those lovely batiks. If you have a yard of a batik in a colour lighter (or darker) than any of these, you could frame the leftover blocks and let them 'float', then you the remaining stips for a pieced border.
Looks like you've got the makings of another whole (lovely) lap quilt. And I'm sure you get lots of great ideas from more experienced quilters (which I am not!)
Good luck!