why not have a handful of nuts? like almonds or walnuts, a little healthy fat, small amount of protein and carbs...
soup can also be a good balance of carbs/protein/and fat...like barley soup with some chicken and veggies in it...sometime though kind of high in sodium (unless you make it yourself) so it can cause bloating
hummus (2tbs for 50 cal) with carrots (35 cal) and broccoli (40 cal) plus a few organic pita chips (75 cal) is nice
my favorite snake for around 200 cal right now is:
some frozen berries (30 cal)
bit of yogourt (around 6 oz) ff (100 cal)
ice cubes
1 packet of ff sf hot chocolate mix (10 cal)
scoop of protein powder (80 cal)
mix with water (or milk) if you need some liquid in it
blend and enjoy...it has calcium, protein, fiber, small amount of good carbs, and chocolate