Are you an incoming college freshman getting ready to head off to music school? You've probably done your best to make sure you have all the accessories and supplies you'll need to make your first year a good one.
By the end of freshman year, though, you'll find that a lot of the stuff you thought was necessary really isn't essential. A super high-tech Dr. Beat metronome is extremely cool, for example, but Korg metronomes and tuners are cheaper, more portable, and just as effective.
Here's a list of all the things I would keep in my flute bag by the time I graduated from college:
The moral of the story is: your gig bag doesn't have to be stuffed to the gills in order for people to take you seriously. Don't let your gadgets and toys define you; instead, let your skill do the talking.