In fact, I have been a part of some Thai funerals and while different, there is some common traditions. Not everyone get gun shots, but some do.
What happens to ashes should be cleared here. Next day, when ashes has cooled down, close relatives will come and try to find best bones for them to keep. Then second row will be bones to keep in the house of the passed. Third row will be temple and that, whatever, place bones will be stored with photo, text or nothing.
Then rest of the ashes and bones will be scattered to the nearest big water. Here in Udon Thani it will be Mekong River. If a good reason, maybe own bond or similar. Ocean is of course possible, but sea more common here in Thailand.
I do not mind my wife having some my teeths with her all the time, if she feels that it helps her. Also having a place beside my favourite Buddha statue at home is ok. We also did discuss this and agreed that Mekong River is the place and I know the exactt location. Still do not give google coordinates...
For me this is a little bit different. Over 30 years ago, somewhere near River Kwai, one Thai man said to me: "You came here to die". It was a joke that changed my life. Now I can answer to his question: "Yes".
I just hope that this project will be something like 40-50 years project, not 30+