You can use many household items to clean jewelry. You could use Windex, alcohol, vinegar, hydrogen peroxide, baking soda, or even just soap and water. I would use caution when using the chemicals just mentioned. I have even seen toothpaste used on inexpensive jewelry pieces, but again I would use caution because toothpaste is abrasive. I would never use any of these chemicals on fine jewelry. You could cause damage.
A better solution is to use half Mr. Clean and water with a small amount of ammonia. Many jewelry stores use this solution and it is safe for all jewelry.
For tarnished sterling silver baking soda can be mixed with water until you get a paste. Use this paste to rub off the tarnish.
vinegar
Besides jewelry cleaners it is uncommon to find any "normal" house hold items that utilize this technology.
A kilometer is a unit of measurement for distance and not a household item.
what household item is the shaped like a pyramid
Yes Plus Fabric Softener is a household item. Yodora Deodorant is a household item. Yellow peppers are a household item.
Many things could be used to create a jewelry box from household goods. One item that could be recycled for this use is old jars. Some other household items that you may have laying around that could be used is Styrofoam cups to poke the earnings into and old wood nailed together into a box.
Ordinary soap that is not powder is an example of a household product that one can use to clean a car
A "septic tank"
Food is an important household component. It isn't necessarily a household material. A household material would be more like something that cleans the floor, etc.
Coke. Vinegar works to but i wouldn't drink it
A bag of flour or sugar is a common household item that is around 5 pounds in weight.
Table salt (sodium chloride) is a household item that is made from chlorine and sodium.