This is not something that I like thinking about, but that I do from time to time. In general, I would want Janelle to have full control of any decisions regarding my remains and my possessions.
I will have no use for my body anymore, and I do not care what happens to it. My Grandma Marks was buried in a nice set of pajamas and that sounds comfortable to me. I would also prefer that people did not spend much money on the box (or bag) in which my body is disposed. If my organs or tissues are any use to anyone for medical or scientific purposes, they can have them. On the question of being buried or cremated, I leave that to those who live after me as to whether they want a physical location to visit, or they want to have my remains more portable. I've always been partial to being buried under a sapling, but the symbolism would royally suck if that little tree sickened and died.
I do not plan on taking anything with me. I will have no need for any of my possessions, unlike the superstitious kings of old. I'll let Janelle decide what to do with them. In the slight chance that she has also moved on to eternal life, I ask my children to divide up what they want (as equally as possible) and distribute or toss the rest.
When it comes to our children, should Janelle and I both have died before Rowen and Connor have reached adulthood, I ask that Rowen and Connor be consulted about their preference for who should raise them and where. There is no one in my friends or family whom I do not trust to raise them well. I only ask that they continue to be raised in the Catholic faith.
I don't know how binding this is, but I wanted to get something down.