Divorce lawyers know that some of the most intense fights between a couple can erupt over the most insignificant item —- a matchbook collection or a set of souvenir spoons from family vacations.
The stuff being fought over serves as a proxy because the parties are angry with each other and want to fight over something. The same thing happens in estate law when heirs do not get along and resent each other. The heirs will fight over those very same inexpensive souvenir spoons.
However, in estate law these battles do not make it to court as often as they do in divorce law because divorcing couples are already in court. Most of the time heirs feuding over junk find it cost prohibitive to hire attorneys. Robin Williams' estate might be an exception.