Donating plasma can actually work out better than selling your blood. It takes longer to donate plasma because they will put your red blood cells back in your system. The upside is that you can donate plasma as much as twice a week and you can make anywhere from $40-$60 per donation. You can make that $100 in less than a week if you can stomach the needle.
Companies like Uber and Lyft offer a great opportunity to make some quick cash. You'll need a clean driving record, a fairly new car and the authorization to work wherever it is that you live. If you have all of those things, you can work when it's feasible for you, whether that's in the middle of the day during rush hour, or in the wee hours of the night on a weekend. The choice is yours.
Seek a payday loan or title loan as a last resort. Companies that offer payday and title loan services offer high interest rates (sometimes with percentages in the hundreds). If you cannot pay the loan and any interest back within the stated timeline, you risk even higher interest costs or, in the case of a title loan, the loss of your car. Avoid these types of loans in all but the direst circumstances, unless you are certain you will be able to pay the loan back.
If you are good at writing notes and attended all lectures, you can sell your asserts to less committed students via NoteSale. You can create a listing for free, but the site will take a per cent from each of your sales. Typed notes in PDF/Text format sell best, yet it’s worth trying with scanned handwritten notes too if you have nice clear writing.