My wife totally blew off my birthday last week. Should I get her something nice for a guilt trip or a $1 card?

Sounds like you two are having other issues. So, what do you want to do about the relationship is my question. If you did the whole $1 card, you are just continuing the problem in the marriage and not trying to help it move toward a loving and fulfilling relationship. Drop the $1 card and start acting like an adult and start acting loving etc, the way you want the marriage to be, or you could also talk with your wife about how the marriage is not working the way that it is right now and you are ready to take on the challenge of making it right again. Stop playing games, life is too short.