Busy Sunday

This Sunday I spent more one-on-one time with PJ than I have in a long time, which was wonderful. We went for a "bike" ride (he rode his balance bike, I walked.) We then walked to a birthday party for a friend at his house. There were about eight children there with a parent, a cute arts and craft project making "balloon buddies," homemade pin the tail on the donkey with tape and streamers, frozen reheated pizza, and a cake made from a mix. Low key, but the perfect four year old birthday party. After PJ's nap we went to a fundraiser organized by the local crime watch organization and police with inflated jumping toys for the kids. I was concerned that PJ wouldn't go, because he was very quiet, but when I asked him, he shyly nodded that he did want to go and did get on when we got to the front of the line. The highlight was looking at the police helicopter and watching it take off at the end of the event. I have a feeling we will be hearing about the helicopter for a while, as watching it take off seemed to make a real impression on PJ.
My one dilemma I am left with is from the birthday party. The invitation said, no presents and we didn't bring one. However, I did take a number of pictures at the party (and I think I was the only parent doing so). Would it be better to just e-mail them to the parents of the birthday boy, or have them printed and put them together in a album to give to them?