Add a part-time job.
Roommate.
Rent a room with a family (along the lines of "servant's quarters" or over-the-garage).
You may not want to share all of this, but what you do, approximate pay and expenses, what part of the country you live in etc. could give a clearer picture of what you could do. On a money board I've participated in people were asked to provide more info like this and often got better solutions.
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