Change out your normal curtains for burlap ones for the fall. Who cares that seams show, that's even better. heck even glue on some spiders :) There even the possibility of no-sew if you have those curtain clips from IKEA.
Spring Loaded that fit inside the window with no screws Spring tension decorative rods adjust from 28 to 48 inches No brackets or screws needed. Heavy duty spring for secure fit. Soft plastic tips will not mark or damage mounting surface.
Love the short window treatment over the sink in the kitchen. source: Shea McGee Design website Sun filled kitchen features window covered in Windsor Smith Riad Fabric in Seafoam over farmhouse sink accented with polished nickel bridge faucet.