Crate and Barrel and Ikea have a lot of interesting tablecloths and table runners with bold patterns in all sorts of colors like this one that could be cut down to size and hemmed and hung with velcro. You could also go to a fabric store and find something that you like.
You might also check out some Japanese Norens which are basically curtains that are often used to separate the kitchen from the dining room in Sushi restaurants. You can see a bunch of norens on this site These could also be cut or folded into the size that you need.
Or maybe you’d like a piece of batik artwork
Or even a mosaic
The other thing that you might like (I know I do) is to get a collection of vintage dress patterns and have them framed. Like this or this or this You can purchase these on e-bay, but I find them in thrift stores all the time for about a dollar a piece.
Or you could actually buy a nifty (and inexpensive if you get it from a thrift store) vintage scarf like these Vera Scarves
Or you could make your own piece of artwork from wine labels