Do you have cold feet and an unreasonable obsession for USB flash drives? Then these are the slippers for you! They won’t plug into any PC I’ve seen, but they probably don’t have room to store much besides your feet.
If you like to crochet, you can get a pattern to make your own. If you don’t know what a crochet hook is, you can buy a pair of ready-made slippers (just specify the size and colors).