4. Silver-
It is proved that silver can improve our eyesight. It is one of the most precocious metals. Eating or drinking with a silverware keeps our mind cool and provide good metabolism system.

5. Aluminum-
Aluminum ware is mostly used for baking. It is an excellent heat absorber metal. Scratch-resistant, anodized aluminum utensils are a great choice for cooking but uncoated aluminum ware is quite risky. So, you should not use it.

6. Non-stick- 
This is the most used cookware in the Indian kitchen. It can be made up of any metal. It consumes low oil, so that most of the people think it is a healthier way to choose nonstick cookware. It is helpful for quick ready food but should be avoided for longtime cooking items. Several reports suggest that it causes cancer in case of cooking at a high temperature.

Plastic plates are also used in regular food taking habit. But those are quite harmful for health. On a serious note, try to replace them with a metal one.