Given the high costs of exhibit-hall concrete, exhibitors need to make the most of every inch of it — including their overhead space. But more often than not, exhibitors turn to simple suspended banners or dull identification towers to activate their above-ground presence. Instead, consider a full-blown ceiling structure, which can not only help attendees locate your booth, but also add a striking design element that makes a bold statement about your brand. Here are six exhibit ceilings that went above and beyond typical identification expectations.By Linda Armstrong