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.
A picture-framing vise, or miter clamp, has screw holes on the bottom for attaching to a workbench. But for occasional framing it can get in the way of other benchwork. A solution is to mount it on a wooden base that can be readily clamped and unclamped in your bench vise. The base can be of scrap wood, and made up so that the framing vise will be about chest high for comfortable working.