Sorry for your loss.
It was a year ago also for me too that I lost Zack on 18th February. I never realised how much it would hurt to part with him and to go on without him. Time has made it easier but not a day goes by that I don't think about him or talk about him.
We had his ashes back and I kept them on a shelf in my bedroom next to his photo for a while until I felt I was ready to deal with them. I bought a really nice large plant trough and had a plaque engraved with his name and a message on and bought lots of nice plants to go in there. We scattered a few in special places that we had walked and then kept the remaining to go in the trough in the garden. It's in the same place that he used to like to lie in when it was sunny in the garden.