What about on-campus student jobs?
On-campus jobs may be the best answer to the "Dear Mom and Dad, please send money ..." subject. Many students are able to work enough to cover basic spending money needs. And when a student takes an on-campus job, they don't require a car or gas money to get to work and the employer already understands the time schedule for classes and vacations.
Paper work, there's always paper work
In order to begin work, your son or daughter will need to complete I-9 and W-2 forms. The good news is that once a student has completed those forms once for any on-campus job, they will typically not need to complete another -- even if the on-campus job changes.