I would not feel obligated to send anything. If you want to send something do it, but not out of obligation. We moved away from family due to DH's job twenty years ago. We are invited to weddings and showers, but not birthday parties, Communions or Baptisms. The way I feel is that we are still family and should be invited. It is up to us if we can make it, this is not for the party giver to decide. We are not invited for Christmas, Thanksgiving or Easter since they do not think we will come. What is the harm in extending an invite? This is really a pet peeve of mine and it makes you feel like you are not a part of the family. Through the years, I have changed my tune and now it is, no invite no gift.