Though there is little or no reason for a traveller to go to Ramallah. But if you have to, I have a few suggestions. This West Bank town, just north of Jerusalem, is undergoing a construcion boom in anticipation of becoming the economic capital of Palestine. Currently, it competes with Nablus for the title of Arabic Sweets Capital of Palestine. And, of course, they have baklava of various sorts.
Sweets are definite budget snack food.
Their salads are also enormous. They wouldn't quite make it into the budget range as Lonely Planet defines it, but they are not overpriced. A personal pizza is around 11 NIS and makes a hearty meal. This is the restaurant in Ramallah. It is frequented by young and old locals, tourists, and NGO workers.