A kilometer is a unit of measurement for distance and not a household item.
Probably no individual item. But the combined length of all the fibres in carpets, or all the yarn in clothes, all the strands of wires in cables would measure kilometres.
..... If you have a household runway maybe
>:d
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.
the size of your house
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.
now
...appliance?
Yes