“the old W10 laptops will still be good for listening to music and not doing any banking or shopping on?”
I have 3 older hand-me-down iPhones for ‘net radio and weather and pics [and telephoning, 2 have active SIM cards]. [ABC; Always Be Charging - hence the need of 3]
I have one plugged in the wall in each room with decent speakers (audioengine), they are my stereo systems for music or lectures, the kitchen one plays most of the day and is also used for recipes with a wall mounted monitor for reading the recipe and checking security cameras.