Cardsharp Credit Card Folding Knife

Cardsharp Credit Card Folding Knife
That Cardsharp is a super utility folding knife - ultra thin and light and fits in a wallet or pocket easily. Transforms from a credit card sized sheet to a knife with a sturdy handle.
$19.99
Via shareasale.com

Key-Shaped Folding Knife

Key-Shaped Folding Knife

A small folding knife enclosed in a key-shaped design. Works great on your keychain, doesn't take up much room, and can even pass through TSA!

$5.47
Via amazon.com