Egyptians could decorate in various ways, but one of the more common ones were through jewelry. This could have been made out of different metals that ranged from very inexpensive all the way to expensive metals such as gold or silver. This was one common way of how Egyptians decorated.
Another common way was through the use of different items made by craftsmen, these could include pottery goods for example.
All of this was dependent on the amount of money a certain family/person had, of course.