Pick vintage fabrics, which you can buy at thrift stores for ridiculously low prices and cute them into flags, using one as a template.
I am absolutely obsessed with the apples fabric! I which I could have more of it to make a cutsie dress out of it! Its so school-girlish ..
Then you'll need some yarn, (length depends on you, how long you want it, or how wide your wall is).. and a yarn needle.
Than make some stitched across the tops of your flags, with about half an inch to an inch of space in between..
tah-dah! I put mine above my closet :0) i love it, so...