Binod, it is very difficult for me to decide as I do not know the avaiability of ingredients, but I will try:
Samosa
Hamburger
Plain cake
Idli
Vada
Dosa
Pakoras
Sandwiches
Roti Rolls
Chhola Bhatura
Rajmah Chawal
Stuffed Paranthas
All these are snacky items and also filling enough for a meal.
Vivek I do not have a recipe of my own on this, but saw this on ndtv. Here is the url for papad ki sabzi:
http://goodtimes.ndtv.com/GoodTimesRecipeDetail.aspx?_Show=46&_RecipeID=8