Hi Tayana,
Firstly, I love your choice of quotation:
You gain strength, courage and confidence by every experience in which you really stop to look fear in the face. You must do the thing you think you cannot do.
-Elanor Roosevelt
I think you can send a card to your father with simple expression of the love that you have for him.
Go with the flow from your heart, and please don't add any strain with concerns of a gift, for we can only give of that which we have.
Love, Leah