What to do with baby's ashes...

In December I gave birth to twin boys, sadly one did not survive due to rare complications which resulted in me having an emergency section at 32 weeks.
We had our son cremated, and just yesturday (after 5 long months) we got up the courage to pick up his ashes from the funeral home. :(  I have no clue what to do with them. I want him with me always, and don't want to bury them, or spread them. I have no clue what my other options are. 
We both feel relief that he is now home with us. And the surviving twin is doing so very well, for that we are thankful for.