eeek! Great question.... but not really sure! Maybe the penny would be underneath the folded card..... and the back of the card put in small writing... "For Good Luck". No one has to know it's REAL reason! and you could buy shiny new
2010 pennies, so folks will remember the "year" you got married.
Just an idea... other than pushing them in a vat of sand.
We're pinning pre-printed paper shaped leaves to apples.... so they card are going NO WHERE!
Good luck! Keep us posted what you decide.