Luxe Linear Drains’ stainless steel knife holder creates a barely visible groove in the countertop to keep sharp blades safely out of the way but close at hand. The stainless slot, which can be inlaid, takes up less counter space than a knife block. The holder is available in 14-, 18-, and 22-inch lengths for $78, $88, and $98 respectively; custom sizes are available at additional cost. lineardrains.com