I work overnight and needing some advice...

le

So I've been working overnight for about 8 months now. And I tend to snack snack snack cause I get bored and just try to keep myself up during those 12hrs. I really dont want yo gain anymore weight..although I haven't put on alot but if I keep on snacking the way I do I'm sure I'm going to gain more weight by the end of this year lol. So do anyone else work overnight if so what is some healthy snacks/food do you eat?