Considering the needs of a DJ...

When playing music for an audience, which can include selecting and mixing tracks, interacting with the crowd, and managing sound equipment, you must be able to move freely while ensuring that anything needing to be held is secure.

Plenty of my friends DJ; one thing I've noticed is that it's always a hassle trying to make sure the hard drives and cords are all set up at the venue, so having a place to store these things without "carrying" anything would make life much easier.