Often, it's the things we use every day that we lose the most. Keys are a good example. They are small, we take them everywhere, and sometimes we put them down without noticing. Headphones, especially the wireless kind, are so small and light that we can easily leave them at work or in a gym locker. These items are a big part of our day, and because we're so busy, it's more likely we'll forget where we put them.