The ideal bag is made of sturdy canvas or nylon, with plenty of exterior pockets. This Michael Graves Garden Tote in canvas from Target ($30) has eight pockets, www.target.com. Besides tools, stock it with green twine corralled in a tin (Gardener's Supply Co., $11.50, www.gardeners.com), sunscreen, insect repellent, waterproof bandages, wooden garden markers (to leave yourself notes, like "Plant tulips here"), and a whisk broom for small cleanups.