Ok, you're dead...

[Sundae]

If'n I lived in the US I'd want to go to the Body Farm.
I'd get more young, educated men looking at me in death than I ever did in life

But, yeah. Donation & then as low key a thing as can be managed.
If possible, stick me in a wood somewhere, in an eco-friendly coffin. Or a hemp sack or whatever.

If the 'rents go first there won't be anyone to mourn IRL. I'd hope you'd raise a glass to me though.
Seriously, my bro knows to contact this place if anything happens to me.
Although I prefer to think of it as me having a brief spell in hospital with a dangerous-sounding but otherwise benign ailment. So I can come back and read all the lovely things you've written.

It's less fun if it happens after I die.