You could argue that the o-ring is a bit of a "living fossil" in terms of manufacturing components. They were first brought to market way back at the dawn of the 20th century - and yet, for all their absolute simplicity and the very basic nature of the role they perform, they're still incredibly widely used today.
http://www.yuefeng-seal.com/o-rings/

Nowadays, the trend of green consumption is becoming very popular in the world, with many people preferring to use wooden and paper eating utensils, the most prominent trend of using disposable wooden cutlery. The wooden cutlery set has many advantages, which are both good for health and safe the environment.
http://www.yswooden.com/disposable-wooden-knife/

Undoubtedly, wrist watch is an integral part of modern fashion. Especially for men as we guys don't really have that much accessory options to begin with. A wrist watch is a unique fashion accessory because while its main function is to tell time, it also increases our style – in other words, making our whole image better.
http://www.ys-icedwatch.com/watch/

Yard art is basically a blanket term for ornamental decor that decorates a residential or public lawn or yard. Different types of yard art include lawn sculptures, which may be made from various materials such as metal or cast iron, or lawn statues representing various art, animals, Yard Cups or designs. Some lawn art may depict special occasions or holidays, while other statues may be religious figures.
http://www.yiwuplasticproducts.com/yard-cups/

A button is a fastener that joins two pieces of fabric together by slipping through a loop or by sliding through a buttonhole. In modern clothing and fashion design, buttons are commonly made of plastic but also may be made of metal, wood, or seashell. Buttons can also be used on containers such as wallets and bags.
http://www.jfbutton.com/button/