Rev-a-Shelf. The Undersink drip tray creates a line of defense against under-sink cabinet damage from minor leaks. The design protects the bottom of the cabinet by holding water; it also funnels excess water to the front of the cabinet and onto the floor, alerting owners to a leak. Designed for installation in new 36-inch-sink-base cabinet construction, it can be cut down to fit a 33-inch cabinet. The sleek surface makes for easy clean up, the manufacturer claims. 502.499.5835. www.rev-a-shelf.com.