Even if you're landlocked, you can still give your rooms the unbuttoned air of a seaside cottage. Start by adding some pale, watery color — perhaps in the form of lamp shades. Then bring in something made of wicker or sisal. Both are inexpensive materials that can lighten rooms filled with lots of upholstered furniture. When the warm weather sets in, shift a tufted chair to a spare room and replace it with a wicker one. Roll up thick-pile carpets and leave floors bare or cover them with a sisal rug, a cotton rag rug, or a dhurrie (a flat-woven cotton rug). Since sisal can't be cleaned, you'll lengthen its life by using it only seasonally.