Not many tools can claim to accomplish four different tasks, but Level Best² does. A four-in-one tool, it has the ability to measure level and plumb at the same time. It’s also a rule and a square. It’s made from polystyrene and has two opposing level bubbles, a ruler, and a pencil slot for marking measurements. Cost: $19.95. SLK Development Group. 866-930-5203. www.levelbest2.com.