I got this really neat article in my email today. At my place, we usually stick the palms behind our religious pictures all over the house, and they stay there until our parish priest asks us to bring them to church before Ash Wednesday (so that they can burned to make ashes). Sometimes some kids from our church make little crosses for people to have and I grab a few because I have no idea how to make them.
Would you like to be able to make palm crosses or palm roses? Check out this article.