check with people who graduated with you that you're super cool with, check with professors, check with other friends, check with your mentors if you have some, basically check with everyone you know who's connected directly or indirectly if they can refer you somewhere or for something.
maybe check for temp work agencies, etc (if it's common in your field). and put in the hours to be able to put it on your resumé.
check online for those websites where people post up adds for independant work they need (again shyt you could put on your CV if it applies PLUS you get a contact reference).
keep your eyes and ears open. the hustle will see you through. always remember it's not how hard you work, it's how smart you work.