First of all, Congrats of your pregnancy!
For food/snack ideas what about...
Lara Bars
Rice cakes with almond butter (and jelly?)
Potato chips (can be good when you're nauseous)
Food For Life Brown Rice tortillas with rice, beans, chicken as filling
Corn tortillas with black beans and beef/chicken with avocado as filling (great small, quick snack)
Carrot sticks
Apple slices with almond butter
I hope that helps!