Suitablecovering... Even though they’re far more expensive, personal digital assistants these days are becoming as common as cell phones and pagers. But rather than simply tossing them in a briefcase or attaché where they could be damaged, check out these holders. Of soft, top-grain cowhide, all three models – slip-tab closure, Velcro tab or zippered – are especially made for hand-held computers and, depending on the model selected, offer features such as ID window, business-card pocket, pen/stylus loop and credit-card slots. Each takes a rich-looking imprint, too.