Fastest way to raise a few thousand dollars?

So yes I already have a full time job but I need the money on top of what I plan to make. Basically I need the money for a wedding/immigration fees, and other costs that are gonna come along with that. What are some ways I can hit my goal in a couple months without breaking any laws, and preferably not going into more debt.
Also, I haven’t thought about it until today but is it possible to get a loan for something like this? (yes I know this is debt)