Tile through eBay has their Tile Mate Smart Tracker for $9.99 with Free Shipping for a limited time.

Tile also has an 8-Pack in their store for $65 with Free Shipping for a limited time.

The Tile Mate Bluetooth trackers are perfect for keeping track of your essential items like your keys, bag, wallet, and laptop. The Tile Mate is designed with a convenient hole to loop onto keychains or drop in a bag. It’s water resistant – up to IP57 standards. Use your smartphone to make your Tile ring when it’s nearby but out of sight. Can’t find your phone? Simply double press the button on your Tile to make your phone ring -even on silent. If your Tile isn’t where you left it, the Tile community can anonymously help you and update the location of your item if another phone running the Tile app comes within range of your missing item.