I have thought about this. And I know I at least want to go somewhat presentable, even though I know it won't be pretty. I'll shower, shave, brush my teeth. And I have this comfortable long pink dress that I just keep referring to as my "suicide dress."
In my diary I have written down the makeup I want (it's not much because I never really wore a ton of it) just lipstick really and the dress I want to be buried in, as well as the music that I'd like to be played, and plants. These are just some things that were important to me in life at some point, and I want my send off to be fitting.