Walmart.com has an Emtec Mini USB 2.0 16GB Flash Drive 3-Pack for $11.29 (plus possible tax). Item is eligible for free in-store pickup or free shipping on orders of $35 or more. This item is sold and shipped by Walmart, not a third-party seller.
I bought a pack last week for $11.59 so the price has come down. I live-chatted with customer service and they refunded me the difference. These are very small drives that don't take up precious space if you have close horizontal USB ports. I use them to backup game saves and other data from some of my gaming consoles.