I like to watch crime docs and a show called "unsolved mysteries". I write a mystery/crime/supernatural manga, so watching stories in my genre helps with my creative process. Sometimes if I have a certain emotion or atmosphere for a certain scene or chapter I will make a music playlist for it to capture the mood and play it on repeat.
I do the same while I draw pages too. Lol Usually I have drinks and snacks nearby because when I work, it is often 6+ hours at a time.