Diffuse and protect.
Opaque coverings such as voiles, silks and lace diffuse light while keeping out prying eyes. Look for inexpensive lengths of these fabrics in fabric stores. Then use traditional curtain rings and sling them along a painted broom stick, wire, or mop handle.
Go vintage.
An old lace shawl or tablecloth lends a touch of old-world charm to a bedroom or living room. Browse second-hand shops and antiques fairs for vintage finds, keeping an eye out especially for old curtains. Sometimes all they need is a good dry-cleaning.
Salvage up.
No need to buy blinds new. Visit architectural salvage yards for wooden shutters, shades and blinds. (Wood Venetian blinds are the perfect accent for windows with handsome moldings. Sand and repaint them before installing.)
Try ethnic.
Explore ethnic stores for alternative curtains: Japanese rice paper blinds make a good match for minimalist interiors. Chinese folding screens, either painted or made from silk, make elegant window statements. Experiment with a Middle Eastern slatted-cane roll-up shade.
Refashioned filters.
A length of sari fabric with a rhythmic pattern (or sequins) can create a beautiful dance of diffused light. Cut lengths to fit long windows. Old bedspreads, wall hangings, scarves and vintage quilts also make luxurious light filters.
Wide to tall.
Horizontal slats of light diffused through white aluminum blinds make a room seen wider, while vertical slats make a low ceiling appear higher. Venetian blinds, in general, allow you to vary the amount of light you allow in—from none to diffused.
Blooming drapes.
Plants in outside window boxes provide discreet screenage if situated properly. Or plant an herb garden in your window box. Or arrange long-stemmed flowers such as tiger lilies, tall roses and geraniums in tall vases on the inside ledge.
Total blackout.
When you need total exclusion, forgo velvet and try thick chunky alternatives such as strips of denim, felt or suede squares tacked together. An old rug attached to a wire with strong clips or vintage quilts strung up with ribbon can make a dramatic effect.