If you have manuals for tools and equipment scattered throughout your shop, basement or garage, putting them all in one place will eliminate searches. You can commandeer a two-drawer file cabinet for your manual center, or else consider using an older suitcase. You should be able to find such suitcases in perfect shape for only a dollar or two at garage sales or swap meets, being sold by the owners because they are out of style. Even a smaller suitcase will hold dozens of manuals and can be stored either vertically or flat.