They may be small, but having certain tools and gadgets on your keychain can come in handy when you least expect it. Here are five we tested to consider.

Explore the Ysmart Bullet2: a versatile flashlight with quick-release, magnetic base, and premium materials for everyday and outdoor use.

That’s the essence of this innovative keychain ‘NFC_temp’ by [bjorn]. This nifty gadget harnesses energy from an NFC field—like the one created by your smartphone—to power itself just ...