Nighthawk a fine job done on the flask! I think it's especially cool that you did it to remember your lost friend.
I didn't have a father growing up but a few people did step in as father figures. One of them died two years ago. We used to sit out by his campfire and sip really nice tequilla and cook up the fish he caught that day. (he was a avid outdoorsman)
Every year on the day he died I have a small glass of tequilla out of a bottle that is reserved for that occasion and cook up some fish that I caught that morning.
It's always nice to look back on those who ment a lot to us and remember them. It's even better to do something to honor their memory.