Thumb Drive Key Fob Holders were designed to protect your data from the rigors of travel and keep it all close at hand, but they can also hold, paper money, a lip balm, pack of gum or lipstick. Key Fob Holders can easily fit in your pocket, hook onto your purse, belt loop, book bag or key ring. They're a cinch to make. Finished size 3Â¾â€Â? excluding key ring.