A drinking straw is a utensil that is intended to carry the contents of a beverage to one's mouth. Straws are commonly made from plastics but environmental concerns and new regulation have led to rise in reusable and biodegradable straws. These straws are often made of silicone, cardboard, or metal.
http://www.degradabletableware.....com/sugarcane-cutle

A backpack—also called knapsack, schoolbag, rucksack, rucksac, pack, sackpack, booksack, bookbag or backsack—is, in its simplest frameless form, a fabric sack carried on one's back and secured with two straps that go over the shoulders, but it can have an external frame, internal frame, and there are bodypacks.
http://www.galaxytrendbags.com/backpack/

A spray dryer takes a liquid stream and separates the solute or suspension as a solid and the solvent into a vapor. The solid is usually collected in a drum or cyclone. The liquid input stream is sprayed through a nozzle into a hot vapor stream and vaporized .
http://www.gj-dryingequipment.com/spray-dryer/

A transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits. A varying current in any coil of the transformer produces a varying magnetic flux in the transformer's core, which induces a varying electromotive force across any other coils wound around the same core.
http://www.hydgetpower.com/transformer/

The paper box is a three-dimensional shape, which is composed of a polyhedron formed by moving, stacking, folding, and surrounding several surfaces. The faces in the three-dimensional composition play the role of dividing the space in the space. If the faces in different parts are cut, rotated, and folded, the obtained faces have different emotional expressions.
http://www.ipackagingbox.com/paper-box/