While bathroom fittings may not be on the top of your trip's shopping list, Waterworks is more than a faucet shop. Be tempted by European toiletries, densely plush cotton towels, or tissue holders, soap dishes, and other accessories in mother-of-pearl, resin, pewter, and mercury glass. Subway: N, R, W, 4, 5, 6 to 59th St./Lexington Ave. Other location: 469 Broome St., at Greene St., SoHo, PHONE: 212/966-0605; Subway: 6 to Spring St.; J, M, N, Q, R, W, Z, 6 to Canal St.