When I lost Jimmy last year, my children and I went through ALL the photographs of the past 15 years, looking for any with Jimmy on them. When we found one we put it into a Jimmy album, which we still look through often. It's lovely to have all the photos of him together, from kitten to old age and it's still moving to look through it.
As well as making ourselves an end product of lovely album, it gave us something to do, to focus on. And it brought back lovely memories of so many things that we had forgotten during the past 15 years.
I'm sorry about your loss, I know how painful it is, especially in the early days, but it will get easier to cope with.