As for other tips, all I can say is “a penny saved is a penny earned”. If you are running out of ideas to make money, start saving. Some quick “low hanging fruit” tips to save some quick cash include – switch to MetroPCS or Boost for cellphone (I only pay $20/month), switch auto insurance to Insurance Panda ($25/month), and start using GasBuddy (saves me like $100/month at least. I drive a lot).
One can start Manicure and Pedicure services for the hostel mates, doing it at cheaper rates than the parlors. This is done in mostly all hostels especially in the ones away from the main city and accommodating the bulk of students. There are various other things that can be done like laundry services for the vicinity people. If it’s not a closed campus than a person can help many people living in the locality with such services. Like hauling and cab services, cleaning services and so on. There are tasks that can be done; all you need is to think of the one which can suit you the best.
Search for freelance writing and editing gigs. The rates for these jobs vary: you may be paid by the word, be offered a flat rate for a project, or in some cases can be paid an hourly rate. You typically won't be able to retain copyright over your work or collect royalties, however. Even so, by doing freelance work you can build a portfolio and make valuable connections which may later pay off with more stable job opportunities.