Good idea. I'm going to try this myself. Thanks.I use this space for one of the larger First Aid Kits,I put a wide piece of Commercial grade Velcro the kind that sticks,on the box and other side of Velcro in bottom of this area,and just stick box down,it works well stays put and easy access.The First aide box is water tight and would work well for other uses as well. I don't ride in deep water so that would be something to keep in mind.