Tombstone symbolism expresses personal choice as well as feelings that the family or the decedent wished to convey. Specifically, Lilies convey innocence and purity. Sometimes the hands will hold a chain in which a link has been broken. This signifies that God has in fact broken the chain of life and has taken the person to heaven. Often used as a war commemoration.
Some basic rules apply.
Firstly, use caution when entering a graveyard that appears to be untended. Such places tend to be a haven for rodents, insects and poisonous plants. Some graveyards are private property, so be sure to get permission. The town s historical society can usually help out with securing permission. Cut them in half so that you have 4 blunt pieces.