Good snacks for lactation - will be pumping at work

I’m going back to work on Monday (I’m dreading it so much!!) but I’ll be pumping at work, and I anticipate I’ll be pumping about 3 times a day. I’m a shift manager in a retail setting so I’m on my feet all day. What are some good snacks I can make or buy to take to work that are good for milk supply. I need something easy and fast that I can just take to work or make the night before easily and pack it in my bag. I would really appreciate it! Thanks :)