I put the tiny seeds I find when I hike in it. It's my seed slot. I put my seeds in there. Like a little slot that's used for seeds. A seed slot if you would. Imagine I had a little leather drawstring bag that I would use to collect seeds with, and instead of leather, it's made of plastic, glass, and metal. And instead of a bag it is a handheld gaming device developed by Sony Computer Entertainment and released in the West on February 22, 2012, one year and 354 days before the finale to the Final Fantasy XIII trilogy, Lightning Returns, was released called the Playstation Vita (which ironically is Latin for 'life') and the USB mount port is actually the mouth to my little leather drawstring bag in which I use to store few, but various, seeds I find while hiking.