I love anything with titanium, but material aside, they work much easier than traditional keychains. The design itself is great, even if it's not titanium.
Stainless Steel Husband Keychain with Stamped Relatives for Enhanced SEO
31 Review
Academia Keychain Keychains Todoroki Double Sided: The Perfect Accessory for My Hero Academia Fans
22 Review
KeySmart Magnetic Keychain Secure Attachment Men's Accessories
63 Review
Titanium Keyring by BANG TI: Easy-to-Use Operation for Ultimate Convenience!
50 Review