Going back and forth on this one but might spend the last days binge watching a shit ton of nostalgia from old pictures, to looking through old school books, tv shows, movies i would wish my last thought could be a nostalgic pleasant one but would be hard when the body is shutting down like it´s hard to really try and feel a pleasant memory before you die if you feel physically unpleasant from a rope or a heroin od etc. they would overpower the good thoughts like trying to remember your favorite memory while getting slapped then it most likely would snap you out of it.
TLDR; I will most likely spend all my time watching nostalgic stuff anything from old tv shows or movies like pokemon, beyblade, yugi-oh, bear in the blue house so on, to watching my old school books and photos of my past and my past friends that is my heaven too and I want to be there as I pass <3