Here are two different necklaces I have. I like them, they add zest to the picture. With different styles I can look more punk or cute depending on what I'm up to ^^ They're not very heavy but they seem solid, I just wouldn't intentionally pull on them or anything.
KeySmart Magnetic Keychain Secure Attachment Men's Accessories
63 Review
Ultimate Titanium KeySmart: A Must-Have Organizer for Men's Accessories
49 Review
Custom Engraved Silver FAINOL Boyfriend Keychain
27 Review
Premium Handmade Warranty Men's Keyrings & Keychains by Hide Drink Accessories
45 Review