I've really been thinking about getting one of those new Fuji Instax cameras, but I thought they were mainly for hipsters so I've kind of passed on it. lol
Really? You're going to let imaginary social peer pressure prevent you from trying a tool that might help you? Is it a rule that you MUST be a hipster if you try an Instax? And that it's better to stick to the hipster-mocking crowd than to break out of your comfort zone and try something new?
I know that sounds harsh and it's not meant in a sarcastic or negative way, but if your comment was for real - that you really are dismissing the idea of something you want because of a fear of being associated with the dreaded hipsters - then I think the first thing you need to do is to not care what the hell anyone else thinks and instead, do what you need or want to do for yourself.
There is a lot of great advice on this thread, and I agree with most of it, including the idea that new gear by itself isn't going to pull you out of a slump. I will point out, however, that this might be true simply because all that new gear is, essentially, a repeat of what you already have or know how to use. Sure, a lens with a longer/wider focal length than you're used to, or a set of shiny new filters might help for a few days, but ultimately, you're left with the same problem because you basically are shooting the same way, just with newer toys.
But if you try switching to something that is completely different from what you're used to - that will force you to shoot in a totally different way - it might help shake you out of your slump, or teach you to shoot in a different way that can help you with your regular gear, or give you ideas for other things to shoot. For example, the limitations of the Instax might force you to find subjects that you otherwise would have overlooked because the camera might not handle your normal subjects very well. To maximize the strengths of the equipment and film, you might have to experiment and search more consciously, and getting into that habit of thinking through your shots more deliberately could transfer back to when you're shooting with your DSLR.
It doesn't have to be an Instax, of course, and this comment is not prompted by a need to defend the format. I am only putting this out there because your comment was presented in an off-hand way, but I think there might be some truth to it. Go ahead and dismiss the advice that you truly can't take advantage of for various valid reasons, but for heaven's sake, don't let the fear of being called a hipster stop you. Fake rules about who is and isn't allowed to shoot certain kinds of cameras, I'm sorry, is NOT a valid reason.