Check out this great item that I found online.
Black Periodic Table Keychain “Hugs” – handmade, anodized, hypoallergenic
Tie Bar – Handmade, aluminum, hypoallergenic
By Tesero Jewelry, Handmade Personalized Jewelry & Accessories
www.tesorojewelry.com
tesorojewelry.etsy.com
"Hugs Black Periodic Table Key Chain and Tie Bar "