A Better-Engineered Sprinkler

The Nelson LeakFree Impact Sprinkler is part of a system that uses a triple-sealed connection to eliminate drippage and wasted water. You push to connect the implements rather than screwing them in. Coolest trick: An auto-stop lets you switch between implements at a hose's end without having to go back and shut off the water. [$30 (plus $60 for necessary starter kit); homedepot.com]