Linkin park one more light if I'm on a desert island I want a track that will keep me sane without becoming worn out. I would feel like that one more light and this song could give me hope. I care about the one more light, or I am the one more light for someone else.
Jean Michel Jarre oxygene parts 1-6 technically 6 songs I guess but if pink floyd can compress with you were here's many parts into a single piece then I can too right? It also warped my 12 year old mind as to what music could be. Easily in my top three ablums of all time
Godspeed you Black Emperor storm no limit on size of proper songs, and it has a massive sense of scale and soaring positivity to it, in a similar vein to oxygene but on a grander scale. Part of a bigger picture but it contains a few individual parts in itself.
Bookwise this version of Sweeney Todd. You could substitute this with any musical annotated script/prompt book really. Learn a part or all of them, learn the songs, imagine how you would direct it. I think musical scripts are fantastic boredom killers.
And then a luxuary would probably be my favorite childhood toy. Something homely to fall asleep with. Small and familar.
That or a large stainless steel blade, preferably in the bushwhacker/machette zone. Not unwieldy, not impractial for hunting or defense, or cutting trees/plants for pathing and shelter. A parachute or large waterproof tarp might be a good choice here if I was going for practicality over sentiment (but that's boring and no fun)