if you have a cellular watch then you can just stream from Apple Music!
I have all of the above (iPhone 11 Pro, Apple Watch 6, AirPods Pro) and yet I still rely on my colour-coded last-generation iPod Shuffles when I want to just pop in a pair of earphones and have some favourite tunes that suit whatever mood I’m in (or want to put myself into). Why on earth should one have to spend so much money to achieve the same result (and forgo the elegance of simplicity in the process)?