Nice congrats! I would figure out what you need to get your job done.
Usually this includes laptop, peripherals such as mouse, keyboard and external monitor. Also all the adapters/dongles for laptop. I also like to get a laptop stand such as the Roost stand. I would also see if there is a budget for your desk setup. So if you like standing and working, ask for an adjustable desk and also an office chair.
If the company's headquarters is far from where you live, I would ask for Internet as well. Since having a reliable internet is what makes you productive as an employee. You don't want to be dropping off while on meetings, committing code or pairing/mentoring sessions.
If they offer snacks and such at a physical office, I don't think it's too far fetched to ask for a small stipend for snacks. Not sure about food. Most companies that I've worked for doesn't offer meals. So it is all out of pocket. But of course, that doesn't mean you can't negotiate a higher salary to help pay for such things. It would just be an expense for you in the end and not your employers'.
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