For the pragmatic, Otter Box makes cases featuring durable rubber and polycarbonate that look cool and provide great cushioning ($100; www.otterbox.com). Louis Vuitton has developed the Okapi Case GM, a spacious carrier made of the company’s iconic Damier canvas ($420; www.louisvuitton. com). Just in time for Valentine’s Day, Goldstriker International is unveiling a line of luxury leather and gold- or platinum-plated cases ($1,560; www.goldstriker.co. uk).

For women, Violet May in London makes a stylish gold python-print BlackBerry purse, with a deep inner sleeve for the device, plus room for money, business cards and even a passport ($390; www. violetmaylondon.com). But nothing is more extravagant than the version from Case-Mate, made from 15 grams of gold and encrusted with 3.5 carats of diamonds. Just be sure you don’t drop it down the stairs ($20,000; www.case-mate.com).