It completely depends on your habits and lifestyle. I know that many students at my DD’s school buy clothes for dances and events, workout or SWAG gear for their clubs and sports, gifts & snacks, pens & pencils, an apple occasionally at the Farmer’s Market, go to movies off campus, and go out for meals. They also will buy stuff to prepare meals for a group (ethnic, celebratory- like birthday), buy pizza for a study hour, go for weekend trips, and buy games and music online. Some spend virtually nothing, while some could not imagine having less than several hundred dollars a month/week to spend. Many have very little discretionary spending money, but have carte blanche to order what they like (or their parents order it for them after a phone call) in the way of clothes, sports or extracurricular gear, celebratory restaurant meal, fast food at a weekend competition, transportation to the airport, stuff from Amazon Prime, and other “necessities” that are justified and not considered by them as extra money for purposes of this discussion. There is no single answer. The child of a Sultan or a Prince will have different expectations and resources than a child of a single-parent administrative assistant. I do not know how close NMH is to a town, or how frequently one orders out. I think it would be difficult socially to have less than $10 - $20 a week if there are visits to town and going to movies; ice cream; pizza; etc. and you are responsible for every single thing you buy for events, dances, sports, etc.