Nails, some cans, some refrigerators, stovetops, and cooking pans. All depends though. Tough to tell... New materials being used every day. More and more iron things are being replaced by other metals sadly. :(
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.
Waffle Iron
Table salt (sodium chloride) is a household item that is made from chlorine and sodium.
A bag of flour or sugar is a common household item that is around 5 pounds in weight.
now
...appliance?
Yes
A candle
Queen bed is a household item.
A toy xylophone is a household item.