Sure, it's great to be away from the parents, but hordes of students really miss Mom when it comes to doing laundry. Laundry woes are a rite of passage for many college students, and it may take only one load of ruined clothes to make them sign up for a laundry service.
When it comes to a laundry business, you have a number of options. You can contract out with a local laundry service, meaning you provide the pickup and delivery service, and the customers pay the same amount they would pay if they brought the laundry in themselves. The clincher is the cleaner gives you a bulk discount, so you keep the difference.
Other entrepreneurs tack a small service charge ($2 to $3) on top of the regular price for pickup and delivery. If you have just 10 customers a day, five days a week, that could be $150 extra per week for you.