Are any of your ideas based around anything that you have a personal passion about? Are they based on hobbys are something you studied in school?

You are going to have your best chance at making it if you have a personal interest in it beyond just being a good idea for a business.

The startup I'm working on is based around musical instruments because that's the number one thing that I find interesting.

I'd suggest taking a good look at your list and seeing which of your ideas is most interesting to you outside of probable success in a general sense and see if you can move that forward. Or look for a totally new idea that is in your personal interest space. Cooking, reading, complex math equations, whatever that is.