Thank you everyone for your kind words!
My dog's ashes were hand delivered yesterday. They came in a carved wooden box (urn?). I had no idea - it was a pleasant surprise! As difficult as it is saying goodbye, the home service we used was wonderful. It was expensive but worth it, and I would use them again.
My apartment feels strange and empty now. I live literally across the street from a dog park, so every time I look out the window, I see people coming and going, dogs barking and playing. It's hard to watch. I miss my boy.