Snowballs

I've got a second project going here for Christmas in July.  This one is more of a winter theme than strictly Christmas and is going to become a wall hanging to use in January, after the strictly-Christmas decorations have been put away. 

I just finished 12 snowball blocks.  My Angler tool got another workout, as the corners are formed using squares instead of triangles and the sew-diagonally-and-flip method.  Next up are 64 flying geese blocks but I am not satisfied with the fabric I was planning to use for the "sky" and can't find anything in my stash that will work well.  Oh no, does this mean I have to make a trip to the local quilt shop?