Working at a music store sounds like a good idea. When I first started looking for jobs, I realized that being specific really hindered my opportunities. Being open gave me a better chance at getting a job, but that’s just because I only really needed it for the money. So if you absolutely want a job revolving around music, a competitive industry, then keep that in mind.
I am also studying at a college now. My school has a website where they put together a list of a ton of internships available, paid and unpaid. You could check to see if your school has the same.
If money isn’t the issue, there are plenty of things you can do for and not for pay. One of my friends voluntarily played piano at a nursing home once a week and apparently she was a hit there. If you can do basic improv, it works out great because you can take requests. I played for a parish I was a part of when I was in high school. I volunteered, but sometimes a parish will pay you as well.
Worst case scenario, you can be like me right now on winter break. I didn’t find anything to do, so I’m working on a book of piano arrangements. It’s for me only since I’m mostly doing it for fun and to make myself feel professional. Good Luck!