A food mill is a tool that you use to both purée and strain soft or already-cooked foods. There are both manual and electric models available.
A grater is a surface with sharp, raised teeth or ridges on it to grate or shred firm-textured foods.
A mortar and pestle is a heavy bowl that comes with a short, blunt, thick stick that looks like a miniature baseball bat. It is a multipurpose tool used for grinding, crush and puréeing, and for making pastes and powders.
Pepper mills are tools for converting small quantities of whole peppercorns to ground pepper as needed, on the fly. There are many different designs.
A potato ricer is a tool used to transform cooked potatoes into strands.
A ricer is a device with small holes in it through which you press soft foods. The process leaves skin and seeds behind.
A spice grinder is a tool used to grind up hard, dried whole spices. You can grind them coarsely, or to a fine powder.