When my son died, 6 days old, i just had a small simple funeral, in a small chapel, i was surrounded by those that i knew loved me. We had a hearse and it simply had Zac in white flowers at the back. I carried my son in to the chapel and said my words to him. There was a religious service as at the time i had faith, a few fitting words from me and my mum and then he was buried. The thought book is a good idea. It helps me still and also on the day lighting a candle for him and also releasing one balloon too, keep his spirit free.
It was also comforting knowing he could be buried with things, i buried him with his first teddy, and a blanket to stop him getting cold. I have a memory box too, full of things like a lock of hair, photos and his hand prints.
It was two years ago for me now (i can say this now and you may not believe me, i never believed anyopne who told you this, and i am not patronising you or trying to monopolise your grief - it does hurt) but it does get easier, but there are those times when it hurts as fresh as back then. Stay strong.
Reading all this has brought me to tears, but hoping to help those in need.
Sending love, my thoughts and my prayers