I'm not sure that's a question you should be asking at this time of year
Currently trying to shift that last few pounds, so my daily calorie allowance is around 1300.
For work, I alternate between the following (all on 2 slices sourdough) I don't know if you would call them healthy, but I like them
salami, philadelphia cream cheese spread (extra light), lettuce (317 cals)
salmon, philadelpia cream cheese spread (extra light), lettuce (220 cals)
peanut butter, slice of Jarlsberg cheese, lettuce (324 cals)
and also a piece of fruit - currently my choices are apricots, plums and nectarines (it being summer down here in Australia)
On the weekends after a ride, I have either a banana smoothie (245 cals) or something like a tuna salad (243 cals), baked beans on toast (282 cals), or sardines on toast (180 cals).
If I'm out shopping, then my preferred lunch is sushi.
I'm not actually a snack person, but when I feel like something between meals then it's usually nuts or dried fruit