Many portable power tools come with clamshell carrying cases that protect the tools and keep their accessories organized. But after you've collected quite a few of these cases (and many of them are dark, with few identifying features), confusion starts to gain a foothold. For easy identification of the hidden treasures, I mark the name of the case's contents with a correction pen. The white ink is durable and contrasts nicely with the case for easy identification.—Jack Ipson, Highlands Ranch, Colo.