First, I am so very sorry for your loss. I do have an idea as a gift for the siblings this Christmas that keeps their Connor with them. I have bought many as grieving gifts and I think even though they are young it is a great way to help keep Connor's memory alive. There is a company that specializes in photo engraved jewelry - I've bought several of their hearts. You can have a digital image laser engraved onto the keepsake and it can go with the kids wherever they go - on their backpack, they can wear it, hang it from the window in their bedroom so that Connor can watch over them. Just an idea. I have three kids myself - a Conor John and a Jackson Daniel.
Again, so very very sorry! heart engraved keepsake pendants