Hidden Surprise Bottle, Chocolates, or Pizza

Write a love note put it in a Bottle and hide it somewhere you know your spouse will find it.  You can put it in a box of chocolates by opening it and then resealing it with the letter inside.  You could order pizza and have them cut it in the shape of a heart then if you go pick it up you can slip in the love note.  You might want to have it in a plastic bag so the note is readable once they get it.