We almost can't believe this hasn't been done before. So many times in festival campsites, or at late-night bus stops, we've rooted around desperately trying to find something in our bag, finally emerging triumphant after half an hour of wrestling with it.
But wrestle no more, as luxury luggage brand Tumi have created a backpack with an incredibly cool light-up interior.
Designed in conjunction with Los Angeles producer DJ Vice, the bag has been designed with the jet-setting DJ in mind, who frequently needs to find their equipment in a dark club; it also includes a multitude of pockets and pouches, including space for laptop and iPad, and is made from ballistic nylon, trimmed with leather.
However, we don't think you need to be a budding Calvin Harris to utilise this - it'll be just the thing for finally locating that pen that's been hiding at the bottom for the last few years.
There'll be just 380 made, retailing at £495.
The bag will shortly be available from the Tumi website and Selfridges in the UK from Monday (July 22). Head to the Tumi Facebook page for more information, including details of a competition to win a trip to Las Vegas (competition starts Monday July 22).