This carabiner has been carrying my keys for almost 20 years. It

SIDEKICK® Twist-Free Retractable Badge & Key Carabiner Reel – KEY-BAK

MØTH the Baxter Titanium Carabiner Keychain Ultralight Everyday

The Not For Climbing Titanium Carabiner by Design The Everything

Featuring two connected, yet distinct chambers and built with strong stainless steel, the G-Series simplifies key carrying without sacrificing

Nite Ize Stainless Steel No.3 G-Series Dual Chamber Carabiner Key Chain

The Allen Company 3 inch General Purpose Carabiner is made of durable, lightweight aluminum, providing you with multipurpose use for camping, hiking, backpacking, cycling, fishing, hunting, and more (NOT intended to be used for climbing). Quick clip easily latches accessories and other gear to your pack, keeping your essentials ready to use when you are. Can also use your carabiner as a keychain or for leashes and harnesses for pets and will last for years to come.

Allen Company 3 inch General Purpose Carabiner, Green, Size: One-Size

Carabiner

Key Clipster - Ready to Ship – Tale Of Knives

My keys have almost worn through my carabiner : r/mildlyinteresting

I have lost my keys from my belt loop 4-5 times in the past year

The Mehlville - Titanium Key Carabiner

New carabiner day : r/Hardcore

Hardpoint B175 Carabiner, Tactical Gear