If you're a laptop jock using CDJs or vinyl with MIDI or timecode control, it's quite easy to end up in a situation where you're throwing all your bits and pieces into a regular laptop bag or even an old rucksack.
With this wallet, you can at least separate your laptop from all the other bits and pieces and organise your luggage a bit more. Inside there are nifty tight elastic pockets to cram your USB keys, dongles, portable HDDs and cables into. There's a larger netted compartment that's designed to take a set of headphones; this will even cope with a large set without the housing reversed. Another zipped netted pocked could hold a handful of adaptors and other DJ nerd shrapnel.
On the outside of the bag there are two larger zip pockets, with the front pocket containing a fleece-like soft lining. Both pockets can easily house an iPad and 11-inch Macbook Air, although they are not quite padded enough to withstand a heavy knock.
Admittedly, some might class this wallet as a bit of a luxury add-on - especially if you've already shelled out for an expensive bag - but if you're playing regularly in different clubs with varying specs, something compact and organised can be a real life-saver. This bag is also useful if your DJ setup is different depending on the venue you're playing - just put it inside a larger wheeled controller bag or backpack when needed.