Hi Kristen, you can just send the flower, probably the newer the flower the better, but pollen can last for several months if kept in a cool, dry place.
People take the anther cap off with a toothpick and the pollen sacs stick to the toothpick. Some people put it in a square of wax paper or glassine envelope; others use little 5 ml plastic tubes used in biochemistry or medical labs. I've also had people in send the flower.
Kristen and Gareth, I'll PM you. Thanks for you help.