Buy ‘keychain usb’ with Bitcoin Crypto-Currency – Spendabit

Stainless Steel Free Rotating 2GB Slim Keychain USB Flash Disk (Memory Cards & USB Drives Category)

$36.95 at Gadgets Direct

NITECORE TUBE V2.0 55 Lumen USB Rechargeable Keychain Flashlight

$9.99 at Overstock.com

NITECORE 720 Lumen USB Rechargeable Keychain Flashlight

$44.95 at Overstock.com

NITECORE TIP2 720 Lumen USB Rechargeable Keychain Flashlight

$44.95 at Overstock.com

Fenix E02R 200 Lumen Mini Rechargeable Keychain Flashlight

$23.95 at Overstock.com

NITECORE TUBE 55 Lumen USB Rechargeable Keychain Flashlight (Yellow)

$9.99 at Overstock.com

NITECORE TIKI 300 Lumen USB Rechargeable Keychain Flashlight UV/CRI

$19.95 at Overstock.com

NITECORE TUBE 55 Lumen USB Rechargeable Keychain Flashlight (Olive)

$9.99 at Overstock.com

NITECORE TUBE v2.0 55 Lumen USB Rechargeable Keychain Flashlight (Orange)

$9.99 at Overstock.com

NITECORE TUBE v2.0 55 Lumen USB Rechargeable Keychain Flashlight (Azure)

$9.99 at Overstock.com

NITECORE TUBE v2.0 55 Lumen USB Rechargeable Keychain Flashlight (Transparent)

$9.99 at Overstock.com

StarTech.com Portable USB-C to HDMI Adapter - Quick-Connect Keychain - 4K 30Hz USB Type C Video Converter- Built-In Flex Cable (CDP2HDFC)

$33.73 at Newegg

600 Lumen USB-C Rechargeable Keychain Flashlight

$39.95 at Overstock.com

NITECORE TUBE 55 Lumen USB Rechargeable Keychain Flashlight (Transparent)

$9.49 at Overstock.com

NITECORE TUBE 55 Lumen USB Rechargeable Keychain Flashlight Green

$9.99 at Overstock.com

NITECORE TUBE 55 Lumen USB Rechargeable Keychain Flashlight (Orange)

$9.99 at Overstock.com

NITECORE TUBE 55 Lumen USB Rechargeable Keychain Flashlight (Blue)

$9.99 at Overstock.com

Kawau Smallest MicroSD Transflash TF SD / SDHC USB 2.0 Card Reader Keychain (Card Readers Category)

$14.95 at Gadgets Direct

Apple Shaped Portable USB Rechargeable Speaker with Keychain (Black) (Speakers & Earphones Category)

$23.95 at Gadgets Direct

StarTech.com USB C to mDP Adapter w/ Keychain

$25.22 at Scan Computers

NITECORE TUBE 55 Lumen USB Rechargeable Keychain Flashlight (Yellow)

$9.99 at Overstock.com

NITECORE TUBE V2.0 55 Lumen USB Rechargeable Keychain Flashlight

$9.99 at Overstock.com

NITECORE TUBE 55 Lumen USB Rechargeable Keychain Flashlight (Azure)

$9.99 at Overstock.com

NITECORE TUBE 55 Lumen USB Rechargeable Keychain Flashlight Green

$9.49 at Overstock.com

NITECORE TIKI 300 Lumen USB Rechargeable Keychain Flashlight UV/CRI

$19.95 at Overstock.com

Kawau World's Smallest MicroSD Transflash TF SD / SDHC USB 2.0 Card Reader Keychain (Card Readers Category)

$13.95 at Gadgets Direct

NITECORE TUBE 55 Lumen USB Rechargeable Keychain Flashlight (Olive)

$9.99 at Overstock.com

StarTech.com USB-C to Mini DisplayPort Adapter - 4K 60Hz mDP Adapter with Built-In Flex Cable and Keychain (CDP2MDPFC)

$33.45 at Newegg