If you are the type of person that gives cards, then purchase a general one, nothing too sentimental and/or mushy and have it ready to give to him...but no expectations that he'll give you one in return. If he does give you something, be sure to thank him.
Keep it very simple so that it is not perceived as pursuing or putting pressure on him.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
