This DIY Bandana Quilt would make a great PicNic tablecloth, not to mintion other outside uses. I think I'd go for the Red, White and Blue look though.
The Blue (and Green) Baby Bandana Blanket - QUILTING
Red, White, and Blue Bandana Quilt, top, Summer 2013
diy bandana blanket
Bandana picnic blanket! This is a cute idea--we have a ton of bandanas hanging around our house that never get used any more!
Easy Beginner Sewing Projects 12
Bandana Picnic/Firework Blanket- This is Do-Able blog
Bandana Quilt with instructions!!
Bandanas are available in a variety of colors and designs.