On the proverbial island from where presumably there is no escape , one has to take music which one finds fresh , challenging , protean , open to rediscovery every time one listens to them even now. The albums I have chosen have those qualities I believe. Am sure there are many such out there.
Since the OP wants to take 5, I would perhaps add Anthony Braxton’s Saxophone Improvisations; I can imagine myself listening to just its RKRR ( Opus 77C) all day long for days. And Coltrane’s A Love Supreme for its spiritual heft , the gratefulness and the hope it engenders.